Countdown Game Show - Series 87 Week 4 (2023)

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  • Опубликовано: 24 дек 2024

Комментарии • 57

  • @LL-lv8ke
    @LL-lv8ke Год назад +15

    I really appreciate you posting these but the lazy me misses when you left in the 30 seconds because I don't want to pause, time myself, unpause 😄

  • @dcnole
    @dcnole Год назад +3

    0:30: 542=((4+2)x3)x25+(100-8)
    2:08: 670=7x100-((9-3)x5)
    6:30: 311=25x9+100-(7x2)
    9:45: 167=(6x3-1)x10-3
    11:15: 561=(75x8)-(25+7+6+1)

  • @ricksimon9867
    @ricksimon9867 Год назад

    The first round reminds us of the best advice: First, divide by the numbers you already have.
    8 gives 68,
    4 gives 136
    3 gives 180
    2 gives 271
    Then check if you can easily make one of those from the remaining numbers.
    If these steps fail, they didn't take much time, and you can look for other avenues.
    In this case, both 68 and 136 work.
    _

  • @medusa_404
    @medusa_404 Год назад +4

    Thursday:
    238:
    75 - 6 = 69
    7 - 5 = 2
    69 * 2 = 138
    138 + 100 = 238
    100 + 75 = 175
    175 / 5 = 35
    35 - 1 = 34
    34 * 7 = 238
    75 - 6 = 69
    69 * 5 = 345
    100 + 7 = 107
    345 - 107 = 238
    561:
    75 + 8 = 83
    83 * 7 = 581
    6 - 1 = 5
    25 - 5 = 20
    581 - 20 = 561
    25 - 8 = 17
    7 * 6 = 42
    75 - 42 = 33
    17 * 33 = 561
    75 * 8 = 600
    25 + 7 + 6 + 1 = 39
    600 - 39 = 561
    703:
    8 + 6 = 14
    50 * 14 = 700
    700 + 3 = 703
    50 - 8 = 42
    75 + 42 = 117
    117 * 6 = 702
    702 + 1 = 703
    140:
    3 * 50 = 150
    150 - 10 = 140
    3 + 6 = 9
    9 * 10 = 90
    90 + 50 = 140
    50 + 25 = 75
    5 - 3 = 2 (or 6 / 3 = 2)
    75 * 2 = 150
    150 - 10 = 140
    25 - 6 - 5 = 14
    14 * 10 = 140

  • @francoisedesreumaux3158
    @francoisedesreumaux3158 Год назад +1

    951 75+3=78 2×6=12×78=936+25-10=951

  • @peterkwan1448
    @peterkwan1448 Год назад +3

    Monday (13/2/2023)
    -----------------
    For the first round, it is noticed that 550 = 25 x 22, so another solution to obtain the target is:
    25 - 3 = 22
    100 / 4 = 25
    25 x 22 = 550
    550 - 8 = 542
    Another simple solution can be:
    8 - 3 = 5
    5 x 100 = 500
    25 - 4 = 21
    21 x 2 = 42
    500 + 42 = 542
    For the second round, in addition to Andrew's solution, notice that 615 = 3 x 5 x 41, one possible factoring solution is:
    7 x 5 = 35
    35 + 6 = 41
    25 - 10 = 15
    41 x 15 = 615
    For the third round, in addition to Andrew's obvious solution, an alternative to get from 700 is:
    7 x 100 = 700
    75 / 3 = 25
    25 + 5 = 30
    700 - 30 = 670
    Besides, since 675 = 75 x 9, another easy solution is:
    75 x 9 = 675
    675 - 5 = 670
    Also, it is found that 670 is divisible by 5, so a possible factoring solution is:
    75 / 3 = 25
    25 + 9 = 34
    100 + 34 = 134
    134 x 5 = 670
    The last round is a bit tricky. I got the same as Rachel’s solution, but cannot find any alternative way of obtaining the target.

    • @peterkwan1448
      @peterkwan1448 Год назад +1

      Tuesday (14/2/2023)
      ------------------
      The first round is easy. In addition to the contestants' obvious solutions, there are several alternative solutions:
      3 + 6 = 9
      9 x 25 = 225
      225 + 10 = 235
      235 x 2 = 470
      50 x 2 = 100
      100 - 6 = 94
      25 - 10 = 15
      15 / 3 = 5
      94 x 5 = 470
      50 + 25 + 3 = 78
      78 x 6 = 468
      468 + 2 = 470
      For the second round, in addition to Rachel's solution, there is another alternative from 936:
      75 + 3 = 78
      6 x 2 = 12
      78 x 12 = 936
      25 - 10 = 15
      936 + 15 = 951
      The last two rounds are too easy and there are not many meaningful alternatives.

    • @peterkwan1448
      @peterkwan1448 Год назад +1

      Wednesday (15/2/2023)
      --------------------
      For the first round, in addition to Rachel's solution, an alternative solution is:
      100 - 3 = 97
      97 x 7 = 679
      679 + 6 = 685
      The second round is impossible. Adam's solution is the best that we can get, and this is the only way.
      The third round is easy since there is a 10, and the target is divisible by 10. Apart from the obvious solution, some more alternatives can be found:
      25 + 50 = 75
      75 x 7 = 525
      525 - 5 = 520
      6 + 7 = 13
      50 - 10 = 40
      13 x 40 = 520
      The most intuitive ways to obtain the target in the last round are from 170:
      6 x 3 = 18
      5 - 4 = 1
      18 - 1 = 17
      17 x 10 = 170
      170 - 3 = 167
      3 x 10 = 30
      30 + 4 = 34
      34 x 5 = 170
      170 - 3 = 167
      In addition to Adam's solution, there are a couple of alternative solutions as well:
      6 x 10 = 60
      60 - 3 = 57
      57 x 3 = 171
      171 - 4 = 167
      3 x 10 = 30
      30 + 6 + 5 = 41
      41 x 4 = 164
      164 + 3 = 167

    • @peterkwan1448
      @peterkwan1448 Год назад +1

      Thursday (16/2/2023)
      -------------------
      For first round, in addition to Rachel's solution, an alternative solution is:
      75 / 5 = 15
      15 + 7 + 1 = 23
      23 x 6 = 138
      138 + 100 = 238
      For the second round, some alternative solutions are:
      75 x 8 = 600
      600 - 25 - 7 - 6 - 1 = 561
      25 - 1 = 24
      24 / 6 = 4
      75 + 4 = 79
      79 x 7 = 553
      553 + 8 = 561
      7 x 8 = 56
      56 + 25 = 81
      81 x 6 = 486
      486 + 75 = 561
      The third round is easy. However, I cannot find any alternative for this one, apart from Peter's solution.
      The last round is the easiest round and there are lots of alternatives:
      6 + 3 + 5 = 14
      14 x 10 = 140
      6 x 3 = 18
      10 + 18 = 28
      28 x 5 = 140
      10 - 3 = 7
      25 - 5 = 20
      7 x 20 = 140
      100 / 25 = 4
      3 x 10 = 30
      30 + 5 = 35
      35 x 4 = 140
      100 - 25 - 5 = 70
      6 / 3 = 2
      70 x 2 = 140
      25 x 6 = 150
      150 - 10 = 140
      10 + 5 = 15
      15 x 6 = 90
      90 + 50 = 140

    • @peterkwan1448
      @peterkwan1448 Год назад +1

      Friday (17/2/2023)
      ------------------
      For the first round, the closest that we can get is 948, and there are a couple of ways:
      75 x 2 = 150
      150 + 7 + 1 = 158
      158 x 6 = 948
      75 x 7 = 525
      525 - 1 = 524
      524 x 2 = 1048
      1048 - 100 = 948
      75 - 2 = 73
      6 + 7 = 13
      73 x 13 = 949
      949 - 1 = 948
      The second round is much easier than the first round, since there is 825 = 3 x 11 x 25. However, I cannot find any alternative other than making 75 by 25 + 50.
      For the third round, the target is divisible by 7, so a factoring solution can be found:
      100 - 10 = 90
      90 + 2 = 92
      92 x 7 = 644
      The target in the last round is divisible by 3, so one possible factoring solution is:
      50 / 25 = 2
      75 - 2 = 73
      73 x 3 = 219
      In addition, there are a couple of alternative solutions:
      25 x 9 = 225
      225 - 6 = 219
      6 x 50 = 300
      300 - 75 - 9 = 216
      216 + 3 = 219

  • @easternbrown
    @easternbrown Год назад +3

    951 is also (75+3)*2*6 +25-10

  • @vinaychauhan7936
    @vinaychauhan7936 Год назад +1

    10.27 . . James May has a nice shirt on

  • @jamesrobert994
    @jamesrobert994 Год назад +1

    For the second numbers game today you have the alternative of (50+25)*(7+4)+2

  • @easternbrown
    @easternbrown Год назад +2

    561 is also 75*8 minus everything else

  • @einSteppenwolf
    @einSteppenwolf Год назад

    140=3×50-10=(50/5-6)×(25+10)=(10-3)×(25-5)=10×(6+5+3)=(50+25-5)×6/3=5×(25+3)

  • @Nullifidian
    @Nullifidian Год назад +1

    Monday Countdown
    In the first round, I saw Rachel's solution and also had:
    8 + 3 = 11
    25 x 11 = 275
    275 - 4 = 271
    271 x 2 = 542
    100 x 3 = 300
    300 - 25 = 275
    275 x 2 = 550
    550 - 8 = 542
    In the second round, I saw Andrew's solution and also had:
    7 x 2 = 14
    14 + 6 + 5 = 25
    25 x 25 = 625
    625 - 10 = 615
    7 x 5 = 35
    35 + 6 = 41
    25 - 10 = 15
    41 x 15 = 615
    In the third round, I saw Andrew's solution, but also had this more direct path:
    75 x 9 = 675
    675 - 5 = 670
    And these more complex ones:
    100 - 3 = 97
    97 x 7 = 679
    679 - 9 = 670
    100 x 7 = 700
    9 - 3 = 6
    6 x 5 = 30
    700 - 30 = 670
    75 / 3 = 25
    100 + 25 + 9 = 134
    134 x 5 = 670
    In the fourth round, I saw Rachel's solution, but it's the only one.

    • @Nullifidian
      @Nullifidian Год назад +1

      Tuesday Countdown
      In the first round, I saw Peter's solution and also had these:
      50 + 25 = 75
      75 x 6 = 450
      10 x 2 = 20
      450 + 20 = 470
      6 + 3 = 9
      50 x 9 = 450
      10 x 2 = 20
      450 + 20 = 470
      50 + 25 + 3 = 78
      78 x 6 = 468
      468 + 2 = 470
      50 + 6 = 56
      56 x 25 = 1400
      1400 + 10 = 1410
      1410 / 3 = 470
      In the second round, I saw Rachel's solution and also had this one from factoring (317 x 3 = 951):
      25 x 10 = 250
      250 + 75 = 325
      325 - 6 - 2 = 317
      317 x 3 = 951
      And I also had this solution:
      75 / 3 = 25
      25 + 10 = 35
      25 + 2 = 27
      35 x 27 = 945
      945 + 6 = 951
      In the third round, I saw Andrew's solution and also had these:
      75 x 7 = 525
      525 - 25 - 2 = 498
      9 + 7 + 4 = 20
      25 x 20 = 500
      500 - 2 = 498
      9 x 7 x 4 = 252
      75 / 25 = 3
      252 - 3 = 249
      249 x 2 = 498
      In the fourth round, I saw the contestants' solution and also had these alternatives:
      25 x 9 = 225
      225 + 100 = 325
      7 x 2 = 14
      325 - 14 = 311
      100 - 25 = 75
      7 - 2 = 5
      75 + 5 = 80
      80 x 4 = 320
      320 - 9 = 311
      25 x 7 = 175
      175 + 100 = 275
      9 x 4 = 36
      275 + 36 = 311

    • @Nullifidian
      @Nullifidian Год назад +1

      Wednesday Countdown
      In the first round, I saw Rachel's solution and also had these:
      100 - 3 = 97
      97 x 7 = 679
      679 + 6 = 685
      100 x 7 = 700
      6 / 3 = 2
      8 + 2 = 10
      700 + 10 = 710
      710 - 25 = 685
      100 x 7 = 700
      6 x 3 = 18
      18 - 8 = 10
      700 + 10 = 710
      710 - 25 = 685
      In the second round, I saw Adam's solution, but also had these two other solutions for 1 below:
      100 - 75 = 25
      25 x 25 = 625
      50 + 1 = 51
      51 x 4 = 204
      625 - 204 = 421
      4 + 1 = 5
      75 x 5 = 375
      375 + 50 = 425
      100 / 25 = 4
      425 - 4 = 421
      In the third round, I saw both contestants' solutions and also had these from factoring (13 x 5 x 2^3 = 520):
      50 - 10 = 40
      7 + 6 = 13
      40 x 13 = 520
      50 + 25 = 75
      75 - 10 = 65
      7 + 6 = 13
      13 - 5 = 8
      65 x 8 = 520
      10 x 7 = 70
      70 - 50 = 20
      20 + 6 = 26
      25 - 5 = 20
      26 x 20 = 520
      In the final round, I saw Adam's solution and also had these:
      10 x 5 = 50
      50 + 6 = 56
      56 x 3 = 168
      4 - 3 = 1
      168 - 1 = 167
      10 x 4 = 40
      40 - 6 = 34
      34 x 5 = 170
      170 - 3 = 167
      5 x 3 = 15
      6 - 4 = 2
      15 + 2 = 17
      17 x 10 = 170
      170 - 3 = 167

    • @Nullifidian
      @Nullifidian Год назад +1

      Thursday Countdown
      I saw Rachel's solution, and there's this elaboration on it that allows for a fancy alternative:
      100 + 75 + 1 = 176
      176 - 6 = 170
      170 x 7 = 1190
      1190 / 5 = 238
      Since you're dividing by 5, taking off 5 before dividing is equivalent to subtracting 1.
      And this one, which also uses the factors in a disguised way:
      75 - 7 = 68
      100 / 5 = 20
      20 + 1 = 21
      68 x 21 = 1428
      1428 / 6 = 238
      Here 6 is 3 x 2, so when dividing by 6 after multiplying 68 x 21, the 2 cancels with the 68 to make 34 and the 3 cancels with the 21 to make 7. Therefore it too is 34 x 7 = 238.
      In the second round, I saw Rachel's solution, but I also had this solution from factoring (17 x 11 x 3 = 561):
      7 x 6 = 42
      75 - 42 = 33
      25 - 8 = 17
      33 x 17 = 561
      And I also had this alternative:
      25 - 1 = 24
      24 / 6 = 4
      75 + 4 = 79
      79 x 7 = 553
      553 + 8 = 561
      In the third round, I saw Peter's solution and also had these:
      75 + 6 + 1 = 82
      82 x 8 = 656
      656 + 50 = 706
      706 - 3 = 703
      75 + 50 = 125
      125 - 8 = 117
      117 x 6 = 702
      702 + 1 = 703
      In the final round, I saw Peter's solution and also had this four-small:
      6 + 5 + 3 = 14
      14 x 10 = 140
      And with the 25 and 50 it was just as easy:
      50 x 3 = 150
      150 - 10 = 140
      25 x 6 = 150
      150 - 10 = 140
      50 + 25 = 75
      75 - 5 = 70
      6 / 3 = 2
      70 x 2 = 140
      50 x 25 = 1250
      1250 + 10 = 1260
      6 + 3 = 9
      1260 / 9 = 140

    • @Nullifidian
      @Nullifidian Год назад +1

      Friday Countdown
      In the first round, my solution for one above was:
      75 x 2 = 150
      150 + 7 + 1 = 158
      158 x 6 = 948
      And for one below:
      75 x 7 = 525
      525 + 1 = 526
      526 x 2 = 1052
      1052 - 100 - 6 = 946
      In the second round, I saw Rachel's solution, except that I did 50 + 25 to make 75 instead of multiplying 25 x 3. However, I also had these solutions:
      50 - 4 = 46
      25 - 7 = 18
      46 x 18 = 828
      3 - 2 = 1
      828 - 1 = 827
      25 + 2 = 27
      27 x 4 = 108
      108 + 3 = 111
      111 x 7 = 777
      777 + 50 = 827
      In the third round, I saw the contestant's solution, but there was a more direct way by factoring (23 x 7 x 2^2 = 644):
      10 - 2 = 8
      100 - 8 = 92
      92 x 7 = 644
      And a couple of other ways are:
      100 x 2 = 200
      200 - 2 = 198
      10 - 7 = 3
      198 x 3 = 594
      594 + 50 = 644
      50 + 10 = 60
      60 x 7 = 420
      420 + 2 = 422
      422 - 100 = 322
      322 x 2 = 644
      In the fourth round, it's one of those boring three-large games where there are several obvious answers and no real scope for more interesting solutions.
      Other obvious solutions are:
      50 / 25 = 2
      75 - 2 = 73
      73 x 3 = 219
      25 x 9 = 225
      225 - 6 = 219
      50 x 3 = 150
      150 + 75 = 225
      225 - 6 = 219
      And the only potentially interesting solution I found was this:
      75 x 6 = 450
      450 - 9 - 3 = 438
      438 x 25 = 10950
      10950 / 50 = 219
      But since you can just as easily do 50 / 25 = 2 and 438 / 2 = 219, there's no real point in it.

  • @medusa_404
    @medusa_404 Год назад +2

    Friday:
    947:
    1 above:
    75 * 2 = 150
    150 + 7 + 1 = 158
    158 * 6 = 948
    1 below:
    75 - 1 = 74
    74 * 2 = 148
    148 - 7 = 141
    141 * 6 = 846
    846 + 100 = 946
    827:
    50 + 25 = 75
    7 + 4 = 11
    75 * 11 = 825
    825 + 2 = 827
    7 - 3 = 4
    4 * 4 = 16
    50 * 16 = 800
    25 + 2 = 27
    800 + 27 = 827
    25 * 2 = 50
    50 * 50 = 2500
    2500 - 7 = 2493
    2493 / 3 = 831
    831 - 4 = 827
    644:
    100 * 7 = 700
    50 + 10 = 60
    2 + 2 = 4 (or 2 * 2 = 4)
    60 - 4 = 56
    700 - 56 = 644
    100 - 10 = 90
    90 + 2 = 92
    92 * 7 = 644
    100 + 2 = 102
    102 * 7 = 714
    714 - 50 = 664
    10 * 2 = 20
    664 - 20 = 644
    219:
    25 * 9 = 225
    225 - 6 = 219
    75 * 3 = 225
    225 - 6 = 219
    50 / 25 = 2
    75 - 2 = 73
    73 * 3 = 219
    25 - 9 = 16
    6 + 3 = 9
    16 * 9 = 144
    144 + 75 = 219

  • @einSteppenwolf
    @einSteppenwolf Год назад

    470=10×50-25-3-2=10×(50-3)=6×(50+25)+2×10

  • @einSteppenwolf
    @einSteppenwolf Год назад

    542=4×(100+25+8+3)-2=2×(3×100-25-4)

  • @medusa_404
    @medusa_404 Год назад +2

    Wednesday:
    685:
    100 - 3 = 97
    97 * 7 = 679
    679 + 6 = 685
    7 * 100 = 700
    6 / 3 = 2
    8 + 2 = 10
    25 - 10 = 15
    700 - 15 = 685
    25 * 6 = 150
    150 + 7 = 157
    8 - 3 = 5
    157 * 5 = 785
    785 - 100 = 685
    422:
    1 above:
    4 + 1 = 5
    100 * 5 = 500
    500 - 75 = 425
    50 / 25 = 2
    425 - 2 = 423
    1 below:
    75 + 50 = 125
    125 / 25 = 5
    100 + 5 = 105
    105 * 4 = 420
    420 + 1 = 421
    520:
    50 * 10 = 500
    25 - 5 = 20
    500 + 20 = 520
    7 - 5 = 2
    50 + 2 = 52
    52 * 10 = 520
    50 + 25 = 75
    75 * 7 = 525
    525 - 5 = 520
    167:
    4 * 3 = 12
    12 + 5 = 17
    17 * 10 = 170
    170 - 3 = 167
    5 * 4 = 20
    20 - 3 = 17
    17 * 10 = 170
    170 - 3 = 167
    10 * 3 = 30
    30 - 3 = 27
    27 * 6 = 162
    162 + 5 = 167

  • @einSteppenwolf
    @einSteppenwolf Год назад

    520=25-5+10×50=(7+6)×(50-10)=10×(50+7-5)

  • @einSteppenwolf
    @einSteppenwolf Год назад

    951=3×(10×25+75-6-2)

  • @einSteppenwolf
    @einSteppenwolf Год назад

    670=9×75-5=5×(100+3×9+7)

  • @SuperBartles
    @SuperBartles Год назад

    5:30
    10 * 25 = 250
    + 75 = 325
    -2-6 = 317
    * 3
    = 951

  • @francoisedesreumaux3158
    @francoisedesreumaux3158 Год назад

    670 9-3=6×100=600+75-5=670

  • @einSteppenwolf
    @einSteppenwolf Год назад

    311=9+2+(7-4)×100=4×(100-25)+9+2

  • @cwn89015
    @cwn89015 Год назад

    644:
    10-2=8,
    100-8=92,
    92x7=644.

  • @francoisedesreumaux3158
    @francoisedesreumaux3158 Год назад

    615 25-6=19×7=133-10=123 ×5=615

  • @einSteppenwolf
    @einSteppenwolf Год назад

    615=(25-10)×(5×7+6)=25×5×(7-2)-10

  • @francoisedesreumaux3158
    @francoisedesreumaux3158 Год назад +1

    542 100+25++8+3=136×4=544-2=542

    • @SuperBartles
      @SuperBartles Год назад

      eventually got that one - took me a couple of minutes though heh

  • @einSteppenwolf
    @einSteppenwolf Год назад

    685=7×(100-3)+6

  • @francoisedesreumaux3158
    @francoisedesreumaux3158 Год назад

    470 50-3=47×10=470

  • @francoisedesreumaux3158
    @francoisedesreumaux3158 Год назад

    311 100-25=75×4=300+2+9=311

  • @francoisedesreumaux3158
    @francoisedesreumaux3158 Год назад

    685 100-3=97×7=679+6=685

  • @einSteppenwolf
    @einSteppenwolf Год назад

    614=(3+3)×(100-2)+1+25

  • @einSteppenwolf
    @einSteppenwolf Год назад

    422-1=4×(100-1)+25

  • @boybawang1981
    @boybawang1981 Год назад

    8+3 = 11x25 = 275-4 = 271X2 = 542
    7X5 = 35+6 = 41 25-10 = 15X41 = 615
    75X9 = 675-5 = 670
    100-2 = 98 3+3 = 6X98 = 588+25+1 = 614
    6+3 = 9X25 = 225+10 = 235X2 = 470
    6+2 = 8 75-8 = 67 25X10 = 250+67 = 317X3 = 951
    9-4 = 5 25+75 = 100X5 = 500-2 = 498
    7-4 = 3X100 = 300+9+2 = 311
    6/3 = 2+8 = 10 25-10 = 15 100x7 = 700-15 = 685
    4+1 = 5X100 = 500 50/25 = 2 75+2 = 77 500-77 = 423 CLOSEST
    25+10+5 = 40 7+6 = 13X40 = 520
    6-4 = 2 10x3 = 30+3 = 33X5 = 165+2 = 167
    6+3 = 9 5X10 = 50-9 = 41X4 = 164+3 = 167
    75/5 = 15+7+1 = 23X6 = 138+100 = 238
    25-8 = 17 7X6 = 42 75-42 = 33X17 = 561
    6+8 = 14X50 = 700+3 = 703
    25+3 = 28X5 = 140
    7+6+1 = 14X75 = 1050-100 = 950-2 = 948 CLOSEST
    50+25 = 75 7+4 = 11x75 825+2 = 825
    100-10 = 90+2 = 92x7 = 644
    50/2 = 2 75-2 = 73x3 = 219

  • @einSteppenwolf
    @einSteppenwolf Год назад

    238=(75+1)×5-100-6×7

  • @francoisedesreumaux3158
    @francoisedesreumaux3158 Год назад

    614 100-2=98 3+3=6×98=588 +1+25=614

  • @einSteppenwolf
    @einSteppenwolf Год назад

    498=(9-4)×(75+25)-2

  • @einSteppenwolf
    @einSteppenwolf Год назад

    703=(8+6)×50+3