1
NDA Mathematics 4 September 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
A university awarded medals in basketball, football, and volleyball. Only x students (x < 6) got medal in all the three sports and the medals went to a total of 15x students. It awarded 5x medals in basketball, (4x + 15) medals in football and (x + 25) medals in volleyball.

How many received medals in exactly one of three sports ?

A
21x − 40
B
21x − 35
C
20x − 35
D
20x − 25
2
NDA Mathematics 4 September 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
Let z = [y] and y = [x] − x, where [.] is the greatest integer function. If x is not an integer but positive, then what is the value of z ?
A
−1
B
0
C
1
D
2
3
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
If A = {{1, 2, 3}}, then how many elements are there in the power set of A?
A
1
B
2
C
4
D
8
4
NDA Mathematics 10 April 2022
MCQ (Single Correct Answer)
+2.5
-0.83
Change Language
Consider all the subsets of the set A = {1, 2, 3, 4}. How many of them are supersets of the set {4}?
A
6
B
7
C
8
D
9
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