Question

A coin is tossed 3 times. What are the odds against the coin showing heads all 3 times?

Answer 1

1/8

Answer 2

You have a 50% chance of a coin landing heads. To find out the chances of your coin landing heads 3 times, you have to multiply the chances of all 3 coins getting heads, which would be (1/2) * (1/2) * (1/2), or (1/2) ^ 3, or 1/8.

Answer 3

The questtion asked for the odds against. Neither of these answers shows odds, and both are for, rather than against.