Chapter 11.1, Problem 62HP

To determine

Choose the correct option.

Answer to Problem 62HP

Option $\text{C:}w=2f+1$ is correct.

Explanation of Solution

Given:

  

w, the number of white circles, to f, the number of dark circles.

4 options are: $\text{A:}w=3f;\text{B:}f=\frac{1}{2}w-1;\text{C:}w=2f+1;\text{D:}f=\frac{1}{3}w$

Concept Used:

The First figure: There are 1 dark circle and 3 white circles. The relation: $\text{C:}w=2f+1$

The 2nd figure: There are 2 dark circles and 5 white circles. The relation: $\text{C:}w=2f+1$

The Third figure: There are 3 dark circles and 7 white circles. The relation: $\text{C:}w=2f+1$

Thus, option $\text{C:}w=2f+1$ is correct.