Probability Test - 5

The probability that a number selected at random from the numbers 1, 2, 3 ... 15 is a multiple of 4 is

A coin is tossed 1000 times and 640 times a ‘head’ occurs. The empirical probability of occurrence of a head in this case is

Two coins are tossed simultaneously. The probability of getting atmost one head is

If the probability of an event is p, the probability of its complementary event will be

A card is drawn from a deck of 52 cards. The event E is that card is not an ace of hearts. The number of outcomes favourable to E is[

A girl calculates that the probability of her winning the first prize in a lottery is 0.08. If 6,000 tickets are sold, how many tickets has she bought?

A bag contains three green marbles, four blue marbles and two orange marbles. If a marble is picked at random, then the probability that it is not an orange marble is

If a number x is chosen from the numbers 1, 2, 3 and a number y is selected from the numbers 1, 4, 9. Then P(xy < 9) is