1. Cards are marked with the numbers 2 to 151 are placed in a box and mixed thoroughly. One card is drawn from this box. Find the probability that the number on the card is
a) an odd number
b) a number which is a perfect square.
c) a prime number less than 75.
2. A card is drawn at random from a well-shuffled pack of 52 cards. Find the probability that the card drawn is neither a red card nor a queen.
3. A Box contain 20 balls bearing numbers 1, 2, 3, 4. . . .20. A ball is drawn at random from the box. What is the probability that the number on the ball is
i) an odd number?
ii) divisible by 2 or 3?
iii) divisible by 2 and 3?
Answer Key : 1. a) 1/2 b) 11/150 c) 7/50 2. 6/13 3. i)1/2 ii) 13/20 iii) 3/20