Himani rolls two standard cubes. Find the probability that the sum of the roll is 5, given that one cube came up even and the other came up odd. a) 1/36 b)1/9 c)5/36 d)2/9

As it is given that one is even & one is odd, the sample space is not 36, it is only 18 !

Sample spacewith favourable outcomes :
1 & 4
4 & 1
2 & 3
3 & 2


Probability = 2/9
Thanks & Regards
Bharat Bajaj
askIITians Faculty
IIT Delhi