+0  
 
0
87
1
avatar

A pair of fair dice is rolled. What is the probability of each of the following?
(a) the sum of the numbers shown uppermost is less than 7
(b) at least one 1 is cast

 Feb 25, 2020
 #1
avatar
0

a -  [1 +2 +3+ 4 +5] =15 / 6^2 =5 / 12

 

b = 2 nCr 1 * 5^1 + 2 nCr 2  * 5^0 =11 / 6^2 =11 / 36

 Feb 25, 2020

4 Online Users

avatar