Book Maths Puzzle Logical Reasoning Blood Relations

if four throws with a pair of dices what is the chance of throwing a double twice ?

Read Solution (Total 1)

4c2*(6/36)(6/36)(30/36)(30/36)
= 25/216
10 years agoHelpfull: Yes(1) No(6)

Book Other Question

A bag contains 5 white balls and some black balls. If the probability of drawing a black ball from the bag is twice the probability of drawing a white ball then find the number of black balls. 1!+2!+3!......50!=?