Four whole number taken at random are multiplied together. The chance that the last digit of the product is 1, 3, 7, or 9 is ? By Editor No Comment Answer : A. 16/625
A brother and sister appear for an interview against two vacant posts in an office. The probability of the brother’s selection is 1/5th and that of the sister’s selections is 1/3rd. What is the probability that one of them is selected ? By Editor No Comment Answer : B. 2/5
A bag contains 8 red and 5 white balls. 2 balls are drawn at random. What is the probability that both are white ? By Editor No Comment Answer : D. 5/39
The probability of drawing a red card from a deck of playing cards is ? By Editor No Comment Answer : D. 1/2
If the probability that A will live 15 year is 7/8 and that B will live 15 year is 9/10, then what is the probability that both will live after 15 year ? By Editor No Comment Answer : B. 63/80
