Question

find the probability of getting an odd number on the face of dice, if a die is thrown once?
find the probabilty of getting an prime number on the face of dice,if a die is thrown once?
find the probabilty of getting a doublets when a pair of dice is thrown once?
if a coin is tossed twice then find the probabilty of getting both heads?

answer as fast as possible........

Answer 1

1. Total no. of possible outcomes = 6 [ 1,2,3,4,5&6]
No. of favourable outcomes = 1,3,5
P(E)=3/6 =1/2
2. No. of favourable outcomes = 2,3,5
P(E) = 3/6=1/2
3.Total no. of possible outcomes = 36
No. of favourable outcomes= (1,1),(2,2),(3,3),(4,4),(5,5)(6,6)
P(E) = 6/36=1/6
4.Total no. of possible outcomes = 4 [(H,T),(T,T),(T,H),(H,H)]
No. of favourable outcomes = (H,H)
P(E) =1/4