Mark the correct alternative in each of the following:

A box contains 10 good articles and 6 with defects. One item is drawn at random. The probability that it is either good or has a defect is

Mark the correct alternative in each of the following:

A coin is tossed three times. If events A and B are defined as A = Two heads come, B = Last should be head. Then, A and B are

Mark the correct alternative in each of the following:

Five persons entered the lift cabin on the ground floor of an 8 floor house. Suppose that each of them independently and with equal probability can leave the cabin at any floor beginning with the first, then the probability of all 5 persons leaving at different floors is

Mark the correct alternative in each of the following:

A box contains 6 nails and 10 nuts. Half of the nails and half of the nuts are rusted. If one item is chosen at random, the probability that it is rusted or is a nail is

Mark the correct alternative in each of the following:

A bag contains 5 brown and 4 white socks. A man pulls out two socks. The probability that these are of the same colour is