A mapping is selected at random from the set of all mappings from the set A={1,2,3}in to B= {1,2,3,4}.The probability that the mapping selected is many to one is

5 digit numbers can be formed from the digits 0, 2,2,4,5. One number is selected at random.the probability that it is divisible by 5 is

One hundred cards are numbered from 1 to 100. The probability that a randomly chosen card has a digit 5 is

If a number x is selected from natural numbers 1 to 100,then the probability for x+100/x >29 is

If 1+3p/3, 1-2p/2are the probability of two mutually exclusive events, then p lies

A, B, C are three routes from the house to the office. On any day, the route selected by the officer is independent of the climate. On a rainy day, the probabilities of reaching the office late, through these routes are 1/25, 1/10, 1/4respectively. If a rainy day the officer is late to the office then the probability that the route to be B is

If three six faced dice are thrown together, then the probability that the sum of the numbers appearing on the dice is k(3≤k≤8)is

If n positive integers are taken at random and multiplied together , the probability that the last digit of the product is 2,4,6 or 8 is

Five digit numbers can be formed from the digits 1,2,3,4,5. If one number is selected at random, the probability that it is an even number is

A bag contains four balls. Two balls are drawn and found them to be white. The probability that all the balls are white is