In 20 spins, about how often can you expect to land on a number evenly divisible by 2? The spinner is 1-8. Theorectical probability.

Question

Mathematics

George

4 March, 22:00

In 20 spins, about how often can you expect to land on a number evenly divisible by 2? The spinner is 1-8. Theorectical probability.

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Answers (2)

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Lucian Lam · Answer 1

You can expect to land on a number divisible by two 50% of the time,

as their are 4 options of evens to land on, and 4 odds to land on.

Brooks Wiley · Answer 2

There are 4 numbers from 1 - 8 that are divisible by 2 ... 2,4,6, and 8. So each time you spin you have a 4/8 chance to land on one of them. This reduces to a 1/2 chance. If we spin 20 times, each time we have a 1/2 chance so ...

1/2 = x/20

x = 1/2 * 20 = 10

Theoretically you'll spin a number divisible by 2, 10 times in 20 spins.