Quantitative Aptitude – Modern Maths - Set Theory – If A = {6^2n -35n -1: n = 1,2,3,...}
Slot -2 – Quantitative Aptitude – Modern Maths - Set Theory – If A = {6^2n -35n -1: n = 1,2,3,...}
If A = {6^2n -35n -1: n = 1,2,3,...} and B = {35(n-1) : n = 1,2,3,...} then which of the following is true?
a) Neither every member of A is in B nor every member of B is in A
b) Every member of A is in B and at least one member of B is not in A
c) Every member of B is in A.
d) At least one member of A is not in B
Answer: b)

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Quantitative Aptitude – Modern Maths - Set Theory – For two sets A and B, let AΔB
Slot -2 – Quantitative Aptitude – Modern Maths - Set Theory – For two sets A and B, let AΔB
For two sets A and B, let AΔB denote the set of elements which belong to A or B but not both. If P = {1,2,3,4}, Q = {2,3,5,6,}, R = {1,3,7,8,9}, S = {2,4,9,10}, then the number of elements in (PΔQ)Δ(RΔS) is?
a) 7
b) 8
c) 9
d) 6
Answer: a) 7
Solution: Given, P = {1,2,3,4}, Q = {2,3,5,6,}, R = {1,3,7,8,9}, S = {2,4,9,10}
So (PΔQ)

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Quantitative Aptitude – Modern Maths - Set Theory – Each of 74 students in a class studies
Slot -1 – Quantitative Aptitude – Modern Maths - Set Theory – Each of 74 students in a class studies
Each of 74 students in a class studies at least one of the three subjects H, E and P. Ten students study all three subjects, while twenty study H and E, but not P. Every student who studies P also studies H or E or both. If the number of students studying H equals that studying E, then the number of students studying H is?
Answer : 52

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Quantitative Aptitude – Modern Maths - Set Theory – If among 200 students
Slot -1 – Quantitative Aptitude – Modern Maths - Set Theory – If among 200 students
If among 200 students, 105 like pizza and 134 like burger, then the number of students who like only burger can possibly be?
a) 96
b) 23
c) 93
d) 26
Answer: c) 93
Solution:
Surplus = 105 + 134 – 200 = 39
So there will be minimum 39 students who will like both pizza and burger. And maximum number of students who like both can be 105.
So m

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