Suppose that 5 men out of 100 and 25 women out of thousand are colour blind.A colour blind person is chosen at random.What is the probability of this being male (assuming that males and females are in equal proportion).

Suppose 5% of men and 0.25% of women have grey hair. A grey haired person is selected at random. What is the probability of this person being male? Assume there are equal number of males and females.

Out of 15 persons 10 can speak Hindi and 8 can speak English. If two persons are chosen at random, then the probability that one person speaks Hindi only and the other speaks both Hindi and English is a) 3//5 b) 7//12 c) 1//5 d) 2//5

From the employees of a company, 5 persons are selected to represent them in the managing committee of the company. Particulars of five persons are as follows: A person is selected at random from this group to act as a spokesperson. What is the probability that the spokesperson will be either male or over 35 vears?

Read the following statements and find out the incorrect statement(s). a. Humans are sexually reproducing and viviparous. b. Transfer of sperm in female genital tract (vagina) is called ejaculation. c. There are remarkable differences between the reproductive events in the male and in the female. d. Sperm formation continues even in old men, but formation of ovum ceases in women around the age of fifteen years. e. The male and female reproductive systems are located in the pelvic region.

If birth to a male child and birth to a female child are equal-probable, then what is the probability that at least one of the three children born to a couple is male ? a) 4/5 b) 7/8 c) 8/7 d) 1/2

There are two identical boxes. Box |contains 5 red and 4 black balls, while box || contains 3 red and 3 black balls. A person choose a box at random and takes out a ball If the ball drawn is black, what is the probability that it is drawn from box ||