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If a coin is tossed twice, what is the probability that on the first

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Bunuel
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If a coin is tossed twice, what is the probability that on the first [#permalink] If a coin is tossed twice, what is the probability that on the first  24 Jul 2016, 09:28
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If a coin is tossed twice, what is the probability that on the first toss the coin lands heads and on the second toss the coin lands tails?

A. 1/6
B. 1/3
C. 1/4
D. 1/2
E. 1
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Re: If a coin is tossed twice, what is the probability that on the first [#permalink] If a coin is tossed twice, what is the probability that on the first  24 Jul 2016, 10:38
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first toss the coin lands heads = 1/2
the second toss the coin lands tails = 1/2

For independent even A and B, (A∩B) = A*B

probability that on the first toss the coin lands heads and on the second toss the coin lands tails = 1/2*1/2 = 1/4

Hence, answer will be C.
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stonecold
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Re: If a coin is tossed twice, what is the probability that on the first [#permalink] If a coin is tossed twice, what is the probability that on the first  29 Jul 2016, 13:33
The possible cases are =>{Head,Head} {Head,Tail} {Tail,Head} {Tail,Tail}
Possible Cases=4
Favourable cases = 1
P(E) = 1/4
Smash C
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Re: If a coin is tossed twice, what is the probability that on the first [#permalink] If a coin is tossed twice, what is the probability that on the first  06 Dec 2020, 02:32
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Re: If a coin is tossed twice, what is the probability that on the first [#permalink]
06 Dec 2020, 02:32
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