NDA Mathematics 13 April 2025 | NDA Year Wise Previous Years Questions

NDA Mathematics 13 April 2025

MCQ (Single Correct Answer)

+2.5

-0.833

Consider the following for the two (02) items that follow:
The sum and the sum of squares of the observations corresponding to length X (in cm) and weight Y (in gm) of 50 tropical tubers are given as $\Sigma X = 200, \Sigma Y = 250, \Sigma X^2 = 900$ and $\Sigma Y^2 = 1400$

Which one of the following is correct?

Variance (X) > Variance (Y)

Variance (X) < Variance (Y)

Variance (X) = Variance (Y)

Cannot be determined from the given data

NDA Mathematics 13 April 2025

MCQ (Single Correct Answer)

+2.5

-0.833

Consider the following for the two (02) items that follow:
The sum and the sum of squares of the observations corresponding to length X (in cm) and weight Y (in gm) of 50 tropical tubers are given as $\Sigma X = 200$, \Sigma Y = 250, \Sigma X^2 = 900 and \Sigma Y^2 = 1400$

Which one of the following statements is correct?

Coefficient of variation of X is strictly more than coefficient of variation of Y.

Coefficient of variation of X is strictly less than coefficient of variation of Y

Coefficient of variation of X is same as coefficient of variation of Y.

Coefficient of variation cannot be determined from the given data.

NDA Mathematics 13 April 2025

MCQ (Single Correct Answer)

+2.5

-0.833

Consider the following for the two (02) items that follow:
Let X be a random variable following binomial distribution with parameters n = 6 and p = k Further, 9P(X = 4) = P(X = 2) .

What is the value of k?

1/2

1/3

1/4

1/5

NDA Mathematics 13 April 2025

MCQ (Single Correct Answer)

+2.5

-0.833

Consider the following for the two (02) items that follow:
Let X be a random variable following binomial distribution with parameters n = 6 and p = k Further, 9P(X = 4) = P(X = 2) .

What is the value of P * (X = 3) ^ 0

135/1024

5/128

45/1024

70/1024

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