1. You have just tossed a coin that has come up heads for the tenth time in a row. What is the probability that it will come up heads the next time?

2. Which number in the following series of numbers is least like the others?
1 3 5 7 11 13 15

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THE SOLUTION

1. The chance it will come up heads is 1 in 2. A coin has no memory.

2. 15. It is the only one of the numbers shown that is not prime.