NDA Mathematics 16 April 2023 | NDA Year Wise Previous Years Questions

Mathematics

NDA Mathematics 16 April 2023

MCQ (Single Correct Answer)

+2.5

-0.83

One bag contains 3 white and 2 black balls, another bag contains 2 white and 3 black balls. Two balls are drawn from the first bag and put it into the second bag and then a ball is drawn from the second bag. What is the probability that it is white ?

$\frac{6}{7}$

$\frac{32}{70}$

$\frac{3}{10}$

$\frac{1}{70}$

NDA Mathematics 16 April 2023

MCQ (Single Correct Answer)

+2.5

-0.83

Three dice are thrown. What is the probability that each face shows only multiples of 3 ?

$\frac{1}{9}$

$\frac{1}{18}$

$\frac{1}{27}$

$\frac{1}{3}$

NDA Mathematics 16 April 2023

MCQ (Single Correct Answer)

+2.5

-0.83

What is the probability that the month of December has 5 Sundays ?

$\frac{1}{4}$

$\frac{3}{7}$

$\frac{2}{7}$

NDA Mathematics 16 April 2023

MCQ (Single Correct Answer)

+2.5

-0.83

A natural number n is chosen from the first 50 natural numbers. What is the probability that $n+\frac{50}{n}<50 $ ?

$\frac{23}{25}$

$\frac{47}{50}$

$\frac{24}{25}$

$\frac{49}{50}$