Three coins are tossed simultaneously 150 times and it is found that 3 tails appeared

CBSE Class 9 CBSE Class 9 Maths
1

(i)Three coins are tossed simultaneously 150 times and it is found that 3 tails appeared 26 times, 2 tails appeared 43 times, 1 tail appeared 70 times and no tail appeared 11 times. If three coins are tossed simultaneously at random, then find the probability of getting (a) 3 tails (b) 2 tails © 1 tail
(ii)Do you think that above probabilities can
be written in percentage form easily?

2

Here, total number of trials = 150
(i) Now, consider the following table, which shows the frequency of tails in 150 trials.
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(a) P (getting 3 tails)
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(b) P (getting 2 tails)
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© P (getting 1 tail)
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(ii) Yes, we can write the above probabilities in percentage form easily.