Can You Solve This Easy Math Problem in Your Mind?

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  • Опубликовано: 29 окт 2024

Комментарии • 90

  • @joaopedromeira2619
    @joaopedromeira2619 2 года назад +14

    Hardest thing here is to keep track of the numbers in your mind, but that's a great mind exercise.
    Thank you for this!

  • @LOGICALLYYOURS
    @LOGICALLYYOURS  2 года назад +11

    Solved in mind: YES
    Time: 3 min .... not bad :)

  • @jc5318
    @jc5318 2 года назад +26

    Solved in 2 mins. Started with 7 for the last square as common for 21 and 56. Then last row 2x4x7 ( 4 in the center as the large number - 180 in the center). Then last column 1x3x7 for 21 (3 in center as larger number -120 in center) Then it was easy 6x9x1 for 54.

    • @LOGICALLYYOURS
      @LOGICALLYYOURS  2 года назад +2

      Brilliant !! That was fast

    • @robynperdieu3434
      @robynperdieu3434 2 года назад +1

      I did mine a little differently. 2x4x7 =56
      8x5x3= 120. And 6x9x1=54
      Thank you for the brain teaser.😊🇺🇲🪶

    • @kush8806
      @kush8806 Год назад

      I also used same approach but I took 5 min

  • @historiophile7842
    @historiophile7842 Год назад +3

    It took me about 5 minutes to solve it. Seeing as only one of the products was odd, I worked out what 3 numbers could combine to form it. I then figured 9 would need to be involved in one of the bigger if not the biggest product. Then factoring.👍

  • @Crockist
    @Crockist 2 года назад +10

    I was so excited I got started without keeping track of the time haha. 8 minutes at most, but I'd estimate 5-6 minutes. I did it in my head without paper, though I will say I began with the 21 column instead of finding where 5 was located. I solved it like so:
    21 is only divisible by 2 prime factors, meaning the 3 numbers present must be 3, 7, and 1. I then moved onto 54, which had to have a 9 in it. 54/9=6, so the other numbers are either 6 and 1 or 2 and 3. Due to the current ambiguity of the 21 column, we need more information. From here, I also noticed that the 5 had to be in the row and column involving numbers with the number 0 in the ones column. 180/5=36, and that means that the 180 column needed the 9. That means 180 column is 9, 5, 4.
    120/5=24, so let's see if 1, 3, or 7 fits there. 24 is not divisible by 7, and 1 would be invalid because 120/5/1 does not equal a 1-digit number. That means it has to be 3, meaning that the other number is 8. The 120 row is 8, 5, 3.
    54 is not divisible by 7, meaning that 1 has to go in the 54 row. 54/9=6, meaning that the 54 row is 6, 9, 1, and the 21 column is 1, 3, and 7. By process of elimination, the missing digit on the bottom left is 2. This means that the numbers are, left-to-right, top-to-bottom, is: 6, 9, 1, 8, 5, 3, 2, 4, 7.

    • @LOGICALLYYOURS
      @LOGICALLYYOURS  2 года назад

      I really appreciate your honest reply… and it was almost similar approach… fantastic :)

  • @friend757
    @friend757 Год назад +2

    I have been teaching my 5th grade grand daughter how to do these. I found easiest way to teach her is to have her create these puzzles for me to solve so that she understands the mechanics.

  • @moshemaor1731
    @moshemaor1731 Год назад

    Solved in less than 2 Minutes, but with a pen and paper.
    The short time to solve, is extracted from the decision, where to start from.
    Nice problem. Thanks.

  • @srikanth1649
    @srikanth1649 2 года назад +3

    Within 2 mins
    3rd column , chose 21 ,7*3*1
    Then 3rd row
    With 7*4*2
    Then put 5 in the mid
    Then found the left 4 numbers
    8*5*3 fit for the second row
    Then made the remaining possibilities

  • @SillyMooseMedia
    @SillyMooseMedia 2 года назад +1

    2 minutes, no notes. Started with 5 in the middle because of the 180 and 120 and worked it out from there. The hardest part was remembering where I had placed the numbers.

  • @prateektoshniwal8179
    @prateektoshniwal8179 2 года назад +4

    2 mins in mind.. 21 made it quite easy

  • @1vader
    @1vader 2 года назад +3

    Forgot to track the time, a few minutes. Would have been way faster with a pencil, I almost immediately got the idea but I'm not good at keeping track of a bunch of numbers in my head so I took a bunch of time to make sure I didn't just immediately forget what I just figured out again.

  • @jagannathhajib5415
    @jagannathhajib5415 Год назад

    find the prime factors we get 2,3,5, 7,easy to place 7 at the intersection of 21 & 56; 5 is prime factor for 120 and 180 hence goes in the center intersection . rest can be easily worked out

  • @imonkalyanbarua
    @imonkalyanbarua 2 года назад +1

    Amazing! 👏👏👏

  • @jootpepet
    @jootpepet Год назад

    I solved it without using the rule "use all the numbers 1-9" (because i paused it before the rule came up)
    I came up with a different answer but i think its harder that way. The rule just helps you narrow down the answer

  • @vaibhav4435
    @vaibhav4435 Год назад +1

    It took me 5 minutes to solve it without pen and paper , because I started wrong I filled the first row with (2×9×3)
    But it didn't work out ;)

  • @civilengineeringtestprepar5317
    @civilengineeringtestprepar5317 2 года назад +1

    It took me 4-5 minutes to solve but coincidentally my approach was exactly the same as yours, even the order of filling the boxes was same

  • @pasindukarunarathna1288
    @pasindukarunarathna1288 2 года назад +3

    I sloved within 4 minutes ! I used least common multiple method 🙌

  • @saurabhgupta5686
    @saurabhgupta5686 Год назад

    Solved in 2 mins. I first placed 9. Since 180 and 54 are multiples of 9 , no other no is multiple of 9. Then find position of 5 accordingly to it as 120 and 180 are multiple of 5. Then 4 left in second column to make 180. To make 56 and 21 , 7 will be placed in 3 row n last column. So 2 left in last row to make it 56 and 3 and 1 will be placed in 2nd n 3rd to make it 21. Placed 3 in second row n 1 in first row. Finally 6 and 8 left to make it 54 and 120.

  • @danishsiddique5734
    @danishsiddique5734 Год назад

    It took me around 30 seconds to solve, but if someone would have asked me for an explanation at the same time then i would have confused myself!

  • @ritikkothari2787
    @ritikkothari2787 2 года назад +1

    Solved in literally like under a minute .. maybe got lucky this time… started with 1 row and the same column so yeah did that under a minute

  • @j.r.1210
    @j.r.1210 2 года назад +1

    I took a few minutes to solve this without paper, but I'm not sure that I would describe the puzzle as "easy." It's just doable.

    • @jacoboribilik3253
      @jacoboribilik3253 2 года назад

      Easy meaning the logic behind it is simple. Mental calculation is the hard part, but it has nothing to do with logical reasoning.

  • @gmgames13
    @gmgames13 2 года назад

    3 minutes, first I solved 21 row(1,3,7), then 56 row(2,4,7), and just 5,6, 8, 9 to put in first square, from second try I have ordered them as well

  • @wholesomeparas1
    @wholesomeparas1 2 года назад

    Took ~30 sec
    Start with 21. As 3*7 = 21, position of 7 is known, and so is 3 and 1. Now we know the places of 9 and 6 too, as 96 isn't divisible by 9. Then it gives us 5 and 4 for making the number 180. Rest 8 and 2 would complete the set

  • @shivangisrandomposts2937
    @shivangisrandomposts2937 Год назад

    Completed in 4 min, starting with 7, and then fixed the position of 3 and 1.

  • @iamback4uonly
    @iamback4uonly 2 года назад +4

    30 Seconds. Done.

  • @GouravPandey-y8r
    @GouravPandey-y8r 8 месяцев назад

    actually initially i thought its difficult but able to solve it easily (within 1min- 30 sec ) however it was little difficult for me to remember mentally

  • @DaMoNarch91
    @DaMoNarch91 2 года назад +1

    @3:04 nice

  • @PSRAM-ge6ww
    @PSRAM-ge6ww 2 года назад +1

    I solved it . In first row 6,3,3.
    In 2nd row 2,60,1.
    In 3rd row 8,1,7.

  • @sarthaksharma3851
    @sarthaksharma3851 Год назад

    Honestly , I was able to solve the puzzle in just 1 min 😊🙏 that was great 😃👍

  • @gamefacierglitches
    @gamefacierglitches 2 года назад +1

    1-2 mins for me.
    3rd column = 1×3×7 by default.
    2nd column = 4×5×9 by default.
    1st column = 2×6×8 default.
    Since 120 and 180 are the only multiples of 5, thus 5 is in the center.
    2nd row = 8×5×3 by default.
    1st row = 6×9×1 by default.
    3rd row = 2×4×7 by default.

  • @ahmadmazbouh
    @ahmadmazbouh 2 года назад +3

    first thing i noticed is the seven then thought about the rest for 5min

  • @yaduvarma9854
    @yaduvarma9854 2 года назад +1

    5 min... Not bad

  • @aPictureElement
    @aPictureElement 2 года назад +1

    This was easy. Took about a minute.

  • @gowtham1405
    @gowtham1405 2 года назад +2

    Solved in mind: Yes
    Time took: 5 min 12sec

  • @manish2359
    @manish2359 2 года назад +2

    Almost 40 seconds

  • @samyakjain720
    @samyakjain720 Год назад

    Easy with paper, Strengthens fundamental of first principle.

  • @zahidhussain251
    @zahidhussain251 Год назад

    7, 5, and 9 can only fit in specific squares. Then, work out squares for 1 and 3 and rest is easy.

  • @vangildermichael1767
    @vangildermichael1767 Год назад

    that was fun. thx.

  • @eBrunoro
    @eBrunoro 2 года назад +1

    I used a cronometer: 10min45s without any assistance 😁

  • @fugguhber4699
    @fugguhber4699 2 года назад +1

    21 column 1st about 6 min

  • @sharan9993
    @sharan9993 2 года назад +1

    Time : 3 min 28 secs
    solving was the easy part keeping track of where i put which number was hard 😂
    nicee puzzle.

  • @AbdulKarim-cw8cv
    @AbdulKarim-cw8cv Год назад

    I applied my number knowledge of 'common factors.'

  • @eklavyasingh8143
    @eklavyasingh8143 Год назад

    I did it in 41 sec
    I think playing chess blind folded does help visual retention in mind

  • @shawnweddle3002
    @shawnweddle3002 2 года назад +2

    Solved it in three minutes

  • @somebodyswatching2071
    @somebodyswatching2071 2 года назад +2

    I was able to solve in 3 minutes.

  • @vbsnbs2
    @vbsnbs2 2 года назад +1

    I play Mathdoku regularly.
    It took me only 10seconds

    • @LOGICALLYYOURS
      @LOGICALLYYOURS  2 года назад

      Thanks Nimesh for bringing this puzzle game to my notice. It deserves a dedicated video.

  • @pakirvathukatamai8897
    @pakirvathukatamai8897 2 года назад +2

    Solved in 1st attempt below 1 mins
    21 = 7×3
    56 = 8×7

    • @JackieMoon22
      @JackieMoon22 2 года назад

      Same here. Surprised to see so many people solving it in more than one minute. I feel proud 😁.

  • @sabyasachirimpa
    @sabyasachirimpa 2 года назад +2

    Even with pen and paper I couldn't solve the problem. By the way I am an investor and a millionaire. 🙂😊❤️

    • @friend757
      @friend757 Год назад

      Don't feel bad. These take practice. I am an RN. I can solve it in 5 minute, but I need pencil and paper to do it in that short of time to keep track of what numbers that I have already used. It's logic not math skill.

  • @bujigh5739
    @bujigh5739 2 года назад

    2 9 3
    12 10 1
    4 2 7
    I started with a 10 in the middle since 120 and 180 and it seems alright this solution as well

  • @SaurabhYadav-ys7tm
    @SaurabhYadav-ys7tm 2 года назад +1

    Solved in 3 minutes 40 seconds.

  • @Hasan...
    @Hasan... 2 года назад +1

    3 minutes

  • @nandann7500
    @nandann7500 2 года назад

    1st row 3 18 1
    2nd row 4 10 3
    3rd row 8 1 7

  • @MindgameR3406
    @MindgameR3406 2 года назад +1

    Solved! 4 mins

  • @tandeltours1534
    @tandeltours1534 Год назад

    Solve by 9*5*4=180
    All got in less than 1 minute

  • @raizeahamed2754
    @raizeahamed2754 4 месяца назад

    Can anyone try solving this puzzle with coding ?
    I tried to code but I'm unable to think of the proper algorithm

  • @atifyaqoob5179
    @atifyaqoob5179 Год назад

    Took me 5 minutes to solve

  • @colinh2630
    @colinh2630 Год назад

    9min for me

  • @harishjangir6881
    @harishjangir6881 2 года назад

    I took 10 min

  • @manyamsunil1020
    @manyamsunil1020 Год назад

    1min

  • @jonniboye6399
    @jonniboye6399 Год назад

    3-4 mins.

  • @shivathapa9474
    @shivathapa9474 2 года назад +1

    Just in mind its impossible.Took 2 minutes using pen and paper..

    • @LOGICALLYYOURS
      @LOGICALLYYOURS  2 года назад

      Glad to see you didn’t give up! That’s important of all.

  • @ramakantpaul950
    @ramakantpaul950 2 года назад +1

    Just 1 minute.

  • @martinmackey7191
    @martinmackey7191 Год назад

    Just under 3 minutes

  • @United_India_Viral
    @United_India_Viral Год назад

    There is one more solution

  • @darrylbatchem8985
    @darrylbatchem8985 Год назад

    Order of logic 7 3 1 2 4 5 9 6 8

  • @debjit811
    @debjit811 2 года назад +1

    6 9 1
    8 5 3
    2 4 7

  • @geek_for_life
    @geek_for_life 2 года назад

    Solved in 2 mins...Started with 21.
    .Since 21 = 7*3*1....Then the Whole Thing will Follow then...
    691 | 853 | 247

    • @friend757
      @friend757 Год назад

      I also started with 21. I always knock out combinations that use up prime numbers first.

  • @denism3984
    @denism3984 2 года назад

    6 9 1
    8 5 3
    2 4 7