Probability · NDA previous year questions

2009 12 questions

1. Q1072009 · 19 Apr 2009

   Two dice are thrown. What is the probability that the sum of the faces equals or exceeds 10?

   1. A.1/12
   2. B.1/4
   3. C.1/3
   4. D.1/6
   Show answer

   Answer: D

2. Q1082009 · 19 Apr 2009

   For a binomial distribution $b(n,p)$, $np=4$ and $\text{variance}=4/3$. What is the probability $P(x\ge 5)$ equal to?

   1. A.$(2/3{)}^6$
   2. B.$2^5/3^6$
   3. C.$(1/3{)}^6$
   4. D.$2^8/3^6$
   Show answer

   Answer: D

3. Q1132009 · 19 Apr 2009

   When a card is drawn from a well-shuffled pack of cards, what is the probability of getting a Queen?

   1. A.2/13
   2. B.1/13
   3. C.1/26
   4. D.1/52
   Show answer

   Answer: B