Chapter 4, Problem 15CR

To determine

To find the greatest common factor of 12,40& 68

Answer to Problem 15CR

4

Explanation of Solution

Given information:

Numbers 12,40& 68

Formula Used: Factorization

Calculation:

Here, break both the numbers into its factors respectively.

So, 12 may be written as $3\times 2\times 2$

And 40 may be written as $2\times 2\times 2\times 5$

And 68 may be written as $17\times 2\times 2$

As can see that $2\times 2$ is common in all the numbers. Hence , the greatest common factor is 4.

Conclusion-

4