Question

You have 15 pennies in your pocket. Of those pennies, 2 are Canadian. Suppose you pick a penny out of your pocket at random. Find P(not Canadian).

Answer 1

86%

Wouldn't you just be finding the ratio of pennies to Canadian.

Explanation:

The amount of pennies to Canadian pennies are 13/15

And the amount of Canadian pennies to pennies are 2/15

If you pick a random penny out of your pocket it would be a larger possibility to get the regular pennies.

So the ratio would be I think:

There would be an 86% more chance of grabbing a regular penny than the 13% chance of getting a Canadian penny.