Richard Lee wrote:

If a coin has an equal probability of landing heads up or tails up each time it is flipped , what is the probability that the coin will land heads up exectly twice in 3 consecutive flips ?

A. 0.125

B. 0.25

C. 0.375

D. 0.5

E. 0.666

Probability * # of arrangements --> \(1/2^3*3=0,375\)

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