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# When tossed, a certain coin has equal probability of landing

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When tossed, a certain coin has equal probability of landing [#permalink]  22 Jun 2008, 06:54
When tossed, a certain coin has equal probability of landing on either side. If the coin is
tossed 3 times, what is the probability that it will land on the same side each time?
A. 1/8
B. 1/4
C. 1/3
D. 3/8
E. 1/2
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Re: coin tossing [#permalink]  22 Jun 2008, 07:08
ritula wrote:
When tossed, a certain coin has equal probability of landing on either side. If the coin is
tossed 3 times, what is the probability that it will land on the same side each time?
A. 1/8
B. 1/4
C. 1/3
D. 3/8
E. 1/2

3 times tossing...and same side each time...so cases would be front/front/front or back/back/back. The first case has 1/8 and the second has 1/8. So 1/4...B.
Re: coin tossing   [#permalink] 22 Jun 2008, 07:08
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