Question

When two unbiased coins are tossed. the probability of getting both heads or both tails is?

Answer 1

1/4

The chance of each of them being heads/tails is 1/2, so you multiply 1/2 by 1/2 to get 1/4

Answer 2

When two unbiased coins are tossed,

The events that occurr are

1) ( Tails, Tails)

2) ( Head, Tail)

3) (Head, Head)

4) ( Tails, Heads)

So, Total number of events or Sample space n(S ) = 4


Number of events that have both tails or both heads = 2

Now,

Probability of getting two heads or two tails = 2/4 = 1/2 .

Hope helped!