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16 Dec 2025, 01:53
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How do we know if BOTH means overlapping two sets or overlapping two sets & three sets?
For example,
In this case, both "user-friendly" and "fast response time" means only the part includes ONLY "user-friendly" and "fast response time" NOT "user-friendly" and "fast response time" and possibly "bargain prices" as well.
In this question https://gmatclub.com/forum/in-a-class-o ... 11487.html,
however, 15 play both cricket and football means "cricket" and "football" and possibly "hockey".
For example,
In this case, both "user-friendly" and "fast response time" means only the part includes ONLY "user-friendly" and "fast response time" NOT "user-friendly" and "fast response time" and possibly "bargain prices" as well.
In this question https://gmatclub.com/forum/in-a-class-o ... 11487.html,
however, 15 play both cricket and football means "cricket" and "football" and possibly "hockey".
10 Jan 2026, 12:51
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Learning whenever set says both it means 2 or more than 2, so 30 will be U+F and all three as well
Now, user friendly is 56 and U+F is 30 so only U+B is 26 (56-30)
same only F+B is 18 (48-30)
Total has to be 100
So only B is 100-26-18-30 = 26% of 1200
Now, user friendly is 56 and U+F is 30 so only U+B is 26 (56-30)
same only F+B is 18 (48-30)
Total has to be 100
So only B is 100-26-18-30 = 26% of 1200
01 May 2026, 08:16
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There is no better way than venn diagram.
Multiple ways to look at a problem like this but IMO the best way:
When you put 30% for U and F category:
Remaining of U = 26% [This covers the portion of B and U as well]
Remaining of F = 18% [This covers F and B as well]
Now it becomes very simply to look at it from the perspective of what is remaining.
26+30+18 is covered out of 100.
The leftover is for B which is 26%.
26/100*1200 = 312
Answer: Option A
This value can't be any thing more because it is quite simply established that U and F have to cover up 74% in total.
Multiple ways to look at a problem like this but IMO the best way:
When you put 30% for U and F category:
Remaining of U = 26% [This covers the portion of B and U as well]
Remaining of F = 18% [This covers F and B as well]
Now it becomes very simply to look at it from the perspective of what is remaining.
26+30+18 is covered out of 100.
The leftover is for B which is 26%.
26/100*1200 = 312
Answer: Option A
This value can't be any thing more because it is quite simply established that U and F have to cover up 74% in total.
praveengmat
