1
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
A survey was conducted among 300 students. It was found that 125 students like to play cricket, 145 students like to play football and 90 students like to play tennis. 32 students like to play exactly two games out of the three games.
How many students like to play all the three games?
A
14
B
21
C
28
D
35
2
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
A survey was conducted among 300 students. It was found that 125 students like to play cricket, 145 students like to play football and 90 students like to play tennis. 32 students like to play exactly two games out of the three games.
How many students like to play exactly only one game?
A
196
B
228
C
254
D
268
3
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Let A = {x $$\in$$ R :- 1 $$\le$$ x $$\le$$ 1}, B = {y$$\in$$R :- 1 $$\le$$ y $$\le$$ 1} and S be the subset of A $$\times$$ B, defined by S = {(x, y) $$\in$$ A $$\times$$ B : x2 + y2 = 1}. Which one of the following is correct?
A
S is a one-one function from A into B
B
S is a many-one function from A into B
C
S is a bijective mapping from A into B
D
S is not a function
4
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Let A and B be subsets of X and C = (A $$\cap$$ B') $$\cap$$ (A' $$\cap$$ B), where A' and B' are complements of A and B respectively in X. What is C equal to?
A
(A $$\cup$$ B') $$-$$ (A $$\cap$$ B')
B
(A' $$\cup$$ B) $$-$$ (A' $$\cap$$ B)
C
(A $$\cup$$ B) $$-$$ (A $$\cap$$ B)
D
(A' $$\cup$$ B') $$-$$ (A' $$\cap$$ B')
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