Class XII

A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is:
  1. 1 13
  2. 2 13
  3. 1 26
  4. 1 52
Three unbiased coins are tossed. What is the probability of getting at most two heads?
  1. 3 4
  2. 1 4
  3. 3 8
  4. 7 8
In a meeting, 70% of the members favour and 30% oppose a certain proposal.A member is selected at random and we take X = 0 if he opposed, and X = 1 if he is in favour. Find E(X) and Var (X).
  1. E(X) = 0.9 and Var (X) = 0.29
  2. E(X) = 0.8 and Var (X) = 0.14
  3. E(X) = 0.7 and Var (X) = 0.21
  4. E(X) = 0.6 and Var (X) = 0.22
Two dice are tossed. The probability that the total score is a prime number is:
  1. 1 6
  2. 5 12
  3. 1 2
  4. 7 9
What is the probability of getting a sum 9 from two throws of a dice?
  1. 1 6
  2. 1 8
  3. 1 9
  4. 1 12
Time Elapsed

HR : MIN : SEC
Question Answered
0
Score out of 100
0

Get Started!

we provide the best
services to our students

AmazingCounters.com Views

 

LKG - 12th

Rs 1,999  Annual
Plan
TOP