Question

Use the Counting Principle to find the probability of choosing the 8 winning lottery numbers when the numbers are chosen at random from 0 to 9

Answer 1

For each lottery number, how many digits are there to choose from?

Answer 2

9? I don't know.

Answer 3

From 0 to 9. How many numbers?

Answer 4

9

Answer 5

Try again. 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. How many?

Answer 6

10

Answer 7

There you go. So for each of the 8 lottery numbers, there are 10 possible choices. The counting principle says that we multiply the number of possibilities for each number. So we need to multiply 10, 8 times. What do you get?

Answer 8

100,000,000

Answer 9

Exactly. Well done!

Answer 10

Thank you

Answer 11

You\re welcome