Two coins are tossed 400 times and we get

Two heads:112 times; one head 160 times ;0 times; 0 head :128 times.

When two coins are tossed at random, what is the probability of getting

(i) 2 heads? (ii) 1 heads? (iii) 0 head?

Total number times coin tossed: 400

Number of times Two heads occurred: 112

Number of times One head occurred: 160

Number of times No head (zero head) occurred: 128

Probability P()=

(i). Let p(H₁) be probability of getting Two heads

P (H₁) =

P (H₁) = = 0.28

(ii). Let p(H₂) be probability of getting One head

P (H₂) =

P (H₂) = = 0.4

(iii). Let p(H₃) be probability of getting No head

P (H₃) =

P (H₃) = = 0.32