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Conditional Probability

6. Rachel, Ch...

Question

6. Rachel, Chandler and Monica flipped a coin 5 times and each time the coin landed on “heads”. Monica bet that on the sixth time the coin will land on “tails”, what is the probability that she’s right?

A

(a)1

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B

(b)½

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C

(c)¾

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D

(d)¼

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Solution

The correct option is B (b)½
Ans: (b)
Sol: The probability of the coin is independent on its previous outcomes and therefore the probability for “head” or “tail” is always ½.

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