Latest MBA Aptitude Question SOLUTION: A fair coin is tossed 10 times. find the probability that two heads dont occur consecutively ? Approach plz !

1) 1/2^4
2) 1/2^3
3) 1/2^5
4) NOT

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(#M40015662) MBA Numerical Ability question permutations and combinations, probability Keep an EYE

A fair coin is tossed 10 times. find the probability that two heads dont occur consecutively ?
Approach plz !

1) 1/2^4
2) 1/2^3
3) 1/2^5
4) NOT

Asked In MBA (11 years ago)

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syam kumar  (8 years ago)

let us take in the first attempt we got head (prob =1/2) next we should get in 3 rd time next 5th time ,7 th time ,9 th time total 5 times so total prob is 1/2^5
and if we got head in second time -> 2nd ,4 th, 6th,8 th 10 th total 5 times
sum the both === 1/2^5 +1 /2^5 = 2(1/2^5)= 1/2^4
so the answer is option 1 ========== 1/2^4

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