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MCQ: P 1

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Problems(1)

In how many cases 2 consecutive heads does not appear?

Source: MTRP 2018 Class 11-Multiple Choice Question: Problem 1 :-

2/17/2021
A coin is tossed 9 times. Hence 292^{9} different outcomes are possible. In how many cases 2 consecutive heads does not appear?
[*] 34 [*] 55 [*] 89 [*] None of these
countingcombinatorics