NDA Mathematics 4 September 2022 | Sets, Relations and Functions Question 60 | Mathematics

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 ?

21x − 40

21x − 35

20x − 35

20x − 25

NDA Mathematics 4 September 2022

MCQ (Single Correct Answer)

+2.5

-0.83

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 ?

−1

NDA Mathematics 10 April 2022

MCQ (Single Correct Answer)

+2.5

-0.83

If A = {{1, 2, 3}}, then how many elements are there in the power set of A?

NDA Mathematics 10 April 2022

MCQ (Single Correct Answer)

+2.5

-0.83

Consider all the subsets of the set A = {1, 2, 3, 4}. How many of them are supersets of the set {4}?

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