Question

A box of colored pencils contains exactly 6 red pencils. The probability of choosing a red pencil from the box is 2/7. How many of the pencils in the box are not red?
a) 5 b) 15 c) 21 d) 30

Answer 1

To begin with, you need to find the total number of pencils, which is 21.
Then you subtract 21 from 6 (red pencils) to find how many are not red.

The answer is B. 15 pencils are not red.

~Revilla03

Answer 2

The required number of pencils in the box are not red is 15.

Given that,

A box of colored pencils contains exactly 6 red pencils.

The probability of choosing a red pencil from the box is 2/7.

We have to determine, How many of the pencils in the box are not red.

According to the question,

Total number of pencil = Total number of red pencil ÷ probability of choosing red pencil in the box.

Based on the given conditions, formulate:=  $6 \div\frac{2}{7}$  

Divide a fraction by multiplying its reciprocal = $6 \times\frac{7}{2} = 21$

Therefore,

Number of pencils in the box are not red = Total number of pencil - number of red pencil.

Number of pencils in the box are not red = 21 - 6 = 15.

Hence, The required number of pencils in the box are not red is 15.

For more information about Probability click the link given below.

https://brainly.com/question/11234923