Question

7. Two coins are tossed simultaneously 1000 times, and we get
Two heads : 210 times, One head : 550 times, No head : 240 times,
When two coins are tossed at random what is the probability of getting:
(1) Two heads (i) One head (ii) No head​

Answer 1

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Question :-

Two coins are tossed simultaneously 1000 times, and we getTwo heads : 210 times, One head : 550 times, No head : 240 times.

To find :-

what is the probability of getting:

(i) Two heads

(ii) One head

(iii) No head

Solution :-

(i) Here, total number of trials = 100 times

Number of heads got (H, H) = 21

P(E) =21/100

(ii) Total number of trials = 100 times

Number of exactly one head = 55

∴P(E) = 55/100 = 11/20

(iii) Total number of trials = 100 times

Number of head = 24

∴ P(E)= 24/100 = 16/25

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