Just an alternative way of thinking for riding and cycling question. We can immediately see that 84-12 = 72 people don't row(they do cycling instead) , and 150-48= 102 people in total don't row(they do other sports). Now remove the 72 who do cycling from this and there we have it, 30 people who neither row nor do they cycle
Alternate, logic based method for Q3: You notice that the number of people that did cycling or rowing is 84+48=132. From the information given, of these 132 'counts', 12 of them are accounted for by people who did both cycling AND rowing, i.e. who are being double counted. By subtracting 12 from 132, you are effectively disregarding the overcount and calculating the number of people who did cycling OR rowing to be 120. Of course, the number of people who did NEITHER cycling nor rowing would just be the total number of people minus the people who did EITHER cycling OR rowing, i.e. 150-120=30.
Absolutely amazing collection of questions. I am yet to see anyone addressing such variations in these type of questions. Great going!
Thank you so much!
Great explanation ! Thank you😊
Thank you so much!
Q4: Can we not just determine that beer = 2xwine so 350 total of beer and substract this 381-350= 31 ?
Thank you sir specially for the second half .
Thank you for watching and taking the time to write this! Have a wonderful time studying, and please let us know how things go for you.
Just an alternative way of thinking for riding and cycling question. We can immediately see that 84-12 = 72 people don't row(they do cycling instead) , and 150-48= 102 people in total don't row(they do other sports). Now remove the 72 who do cycling from this and there we have it, 30 people who neither row nor do they cycle
Very helpful. Thanks
Thank you so much!
could you tell me the formula for solving these questions please?
Alternate, logic based method for Q3:
You notice that the number of people that did cycling or rowing is 84+48=132.
From the information given, of these 132 'counts', 12 of them are accounted for by people who did both cycling AND rowing, i.e. who are being double counted. By subtracting 12 from 132, you are effectively disregarding the overcount and calculating the number of people who did cycling OR rowing to be 120.
Of course, the number of people who did NEITHER cycling nor rowing would just be the total number of people minus the people who did EITHER cycling OR rowing, i.e. 150-120=30.