The probability of 3 coins falling all heads up when tossed simultaneously is
1/2
1/6
1/8
None of these
Two dice are thrown at a time.The probability that the difference of the numbers shown on the dice is 1 is
5/18
1/36
A and B are friends.What is the probability that both will have same birthdays?
364/365
1/365
2/365
When two dice are thrown, the probability of getting a number always greater than 4 on the second dice is
1/3
If a coin is tossed twice, the probability of getting at least one head is :
1/4
3/4
The chance that a non -leap year contains 53 saturdays is :
2/7
1/7
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
A bag contains 3 white and 5 red balls.If a ball is drawn at random,the probability that the drawn ball to red is :
3/8
5/8
3/15
5/15
The probability of getting an even number when a die is rolled is
A and B are friends.What is the probability that both will have the different birthdays?