Question

56. Two different coins are tossed together. Find the probability of getting (i) exactly two heads (ii) at least two heads (iii) at least two tails.

Answer 1

Probability of getting exactly two heads = 2/4 = 1/2

Probability of getting at least two heads = 2/4 = 1/2

Probability of getting at least two tails = 2/4 = 1/2

I hope it will help you.

Answer 2

the total possible out come are

hh

tt

ht

th

so, i) p(E)=1/4

=2.5

ii) p(E)=1/4

=2.5

iii) p(E)=1/4

=2.5