Permutation of n different objects is a subset of given objects? Number of signals that can be given by 5 flags of different colours using 3 flags at a time is 120? Five boys and four girls can be seated on a bench so that the boys and the girls can occupy alternate seats in 20? Number of diagonals that can be formed by joining the vertices of 10 sided figure is 35?

From a box containing slips numbered 1,2,3,4,5 one slip is picked up. The probability for the number on the slip is a prime number is 1/5? If A and B are two independent events, the probability that both of them occur is P(A) + P(B)? The number of permutations that can be formed from the letters of the word OBJECT is?The number of permutations of n elements out of which n 1, are alike of one kind, n2 are alike of second kind and rest of them are all different can be given as? The number of combinations of 10 different objects taken 8 objects at a time is?

The probability that a slip of numbers divisible by 4 is picked from the slips of numbers? The probability that an egg will be broken during delivery is 1/200, The number of broken eggs in 1000 eggs would be? The first event can occur in p different ways. After first event has occurred, the second event can occur in q different ways. The number of ways that two events can occur is ___________? A number of three digits from the digits 0,1,2,3----9 can be formed in __________ ways when digits can be repeated? Number of arrangement of 3 books on English and 4 books in Urdu for placing on a shelf is equal to _________ when the books on the same subject are kept together?