Arrangements [Permutations] meeting Probability.
1) Find the probability of getting only one heads in 5 flips
Outcomes are
TTTTH
TTTHT
TTHTT
THTTT
HTTTT
The probability of occurrence of each of these outcomes is 1/32.
Since there are 5 such arrangements the total probability becomes 5/32.
2) Find the probability of not getting exactly one heads in 5 flips
This is exactly equal to all the outcomes except the above which results to 1-5/32 = 27/32
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