Fifteen coupens are numbered `1,2,3,...15` respectively. Seven coupons are selected at random one at a time with replacement The Probability that the largest number appearing on a selected coupon is 9 is :

Seven chits are numbered 1 to 7. Four chits are drawn one by one with replacment. The probability that the least number appearing on any selected chit is 5 is :

Three numbers are selected at random one by one with replacement from the numbers 1,2,3,….60. The probability that the A.M. of the numbers selected is 15 is.

Twenty coupons are numbered 1,2,3......, 20 respectively. Four coupons are selected at random without replacement. If maximum and minimum numbers on selected coupons are 12 and 3 respectively. Then the probability that the maximum number on the remaining selected coupons is 9 is (1) 5/(56) (2) 5/(28) (3) (15)/(28) (4) 8/(56)

Twenty coupons are numbered 1,2,3......, 20 respectively. Four coupons are selected at random without replacement. If maximum and minimum numbers on selected coupons are 12 and 3 respectively. Then the probability that the maximum number on the remaining selected coupons is 9 is (1) 5/(56) (2) 5/(28) (3) (15)/(28) (4) 8/(56)

Two numbers are selected at random from the integers 1 to 13. If the sum is even, find the probability that both numbers are odd

Two numbers are selected at random from integers 1 through 9. If the sum is even, find the probability that both the numbers are odd.

Two distinct numbers are selected at random from the first twelve natural numbers. The probability that the sum will be divisible by 3 is :

Two integers are selected at random from integers 1 through 11. If the sum is even, find the probability that both the numbers are odd.

Two integers are selected at random from integers 1 through 11. If the sum is even, find the probability that both the numbers are odd.

Three numbers are chosen at random without replacement from {1,2,3,....10}. The probability that the minimum of the chosen number is 3 or their maximum is 7 , is: