Chapter CSB1.2, Problem 22E

To determine

To find: the GCF of numbers $4st,10s$ .

Answer to Problem 22E

The GCF of numbers is $2s$ .

Explanation of Solution

Given:

The numbers are $4st,10s$ .

Calculation:

GCF means greatest common factor. Greatest common factor of numbers or monomials (say a and b ) is the largest positive number or monomial which is divisible by the numbers and monomials ( b and a ).

Factorize each numbers as follows:

  $\begin{array}{l}4st=2\times 2\times s\times t\\ 10s=2\times 5\times s\end{array}$

GCF of the numbers is,

  $\text{GCF}=2\times s=2s$

Thus, the GCF of numbers is $2s$ .