Chapter CSB1.2, Problem 4E

To determine

To find: The GCF of the numbers given.

Answer to Problem 4E

The GCF is 8.

Explanation of Solution

Given information: The numbers given 24, 40.

Calculation:

Prime factors of 24 are

  $24=1\times 2\times 2\times 2\times 3$

Prime factors of 40 are

  $40=1\times 2\times 2\times 2\times 5$

Greatest common factor of 24, 40 is

  $1\times 2\times 2\times 2=8$

  $\therefore$ GCF of 24, 40 = 8.