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in Class VII Maths by (-4,941 points)

A coin is tossed 80 times and the head is obtained 38 times. Now, if a coin tossed once, what will the probability of getting:
(i) a tail
(ii) ahead

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(i)    ∵ Total number of possible outcomes = 80

 and, the number of favourable outcomes of getting a tail = 80 - 38 = 42

∴ Probability of getting a tail = Number of favourable outcomes/Total number of outcomes

= 42/80 = 21/40

 (ii) ∵ Total number of possible outcomes = 80

 and, the number of favourable outcomes of getting head = 38

∴ Probability of getting a head = Number of favourable outcomes/Total number of outcomes

= 38/80 = 19/40

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