Non occurrence of an event E is denoted by:

If an event always occurs , then it is called:

Sample space for tossing a coin is:

. The number of ways for sitting 4 persons in a train on a straight sofa is:

A die is rolled , the probability of getting 3 or 5 is:

16. Four persons wants to sit in a circular sofa, the total ways are:

A card is drawn from a deck of 52 playing cards. The probability of card that it is an ace card is:

Probability of non-occurrence of an event E is equal to :

How many signals can be given by 5 flags of different colors , using 3 at a time

The number of diagonals in 10-sided figure is

A coin is tossed 5 times , then ?(?) is equal to:

A die is rolled , the probability of getting 3 or 5 is:

Let ? = {?, ?, ?, … , ??} the probability that a number is divided by 4 is :

Four persons wants to sit in a circular sofa, the total ways are:

How many signals can be given by 5 flags of different colors , using 3 at a time

If ? is negative then ?! is