Question

Suppose you randomly choose a number between 1 and 20. what are the odds against choosing a prime number?

Answer 1

Hint: P(prime number) = Number of primes from 1 to 20/Number of numbers from 1 to 20

we have three things to consider: success, failure, total
we can create a chart for these as

S . . . . F . . . . T
8 . . . . 12 . . . 20
odds in favor are success / failure so we get
8/12 = 2/3

Answer 2

The odds against choosing a prime number is 2/3.

What is a prime number?

The prime numbers are those numbers that have only one factor namely 1 and the number itself.

P(prime number) = Number of primes from 1 to 20 /  Number from 1 to 20

We have three things to consider:

success, failure, and total

S . . . . F . . . . T

8 . . . . 12 . . . 20

P(prime number) = 8/12 = 2/3

Learn more about prime numbers;

brainly.com/question/4184435

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