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GATE | Gate IT 2005 | Question 32

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An unbiased coin is tossed repeatedly until the outcome of two successive tosses is the same. Assuming that the trials are independent, the expected number of tosses is

(A) 3
(B) 4
(C) 5
(D) 6


Answer: (A)

Explanation:  

anil_05_32

anil_05_32_1

 

This solution is contributed by Anil Saikrishna Devarasetty.

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Last Updated : 28 Jun, 2021
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