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An unbiased coin is tossed five times. The odds in favour of getting atleast one tail is

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An Intiative by Sri Chaitanya

1:31

31:1

31:32

1:32

answer is B.

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Detailed Solution

$N o t a i l \to P (A) = \frac{1}{32}$

$a t l e a s t o n e t a i l →P (A) = 1 - \frac{1}{32} = \frac{31}{32}$

$o d d s i n f a v o u r P (A) :P (A) = 31 : 1$

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