Question

A coin is tossed 10 times. given that the first 9 tosses were heads, find the percent chance of getting 10 heads in a row?

Answer 1

Ok so the answer is 1/2

Answer 2

1/2

Explanation:

Assume the coin is a fair coin.

Since we already know that the first 9 tosses were heads, the probability of 9 straight heads in the first 9 tosses is 1.

It all depends on the last toss. There is an equal probability of heads and tails in a single toss of a fair coin.

p(heads) = 1/2

p(10 heads) = 1/2