The probability for a randomly selected number out of 1,2,3,4, -----, 25 to be a prime number is:
2/25
23/25
10/25
9/25
In a throw of dice, the probability of getting a prime number is:
2
1/2
3/2
6
The chance that a non -leap year contains 53 Saturdays is :
2/7
1/7
2/365
1/365
If a coin is tossed twice, the probability of getting at least one head is :
1/4
3/4
2/4
A and B are friends.What is the probability that both will have the different birthdays?
364/365
3/365
In a single throw of two dice, the probability of getting a sum of 10 is:
1/12
1/36
1/6
1/3
The probability of getting a number greater than 2 or an even number in a single throw of a fair dice is:
2/3
5/6
4/2
Three letters, to each of which corresponds an addressed envelope are placed in the envelopes at random.The probability that all letters are placed in the right envelopes is:
1
0
Two dice are thrown at a time.The probability that the difference of the numbers shown on the dice is 1 is:
5/18
In a single throw of a dice, find the probability of getting a number which is not greater than 2?
