Chapter 4.1, Problem 4E

To determine

To find factors of number 55

Answer to Problem 4E

1, 5, 11, and 55.

Explanation of Solution

Given Information:

Number 55

Calculation: To find factors of a number need to find the LCM of the respective number by finding the divisors of it. The factors of 55 are the numbers which can divide the number 55 completely.

Since the Factors of 55 are all the numbers that can evenly divide into 55, simply divide 55 by all numbers up to 55 to see which ones result in an even quotient.

  $\begin{array}{l}55÷1=55\\ 55÷5=11\\ 55÷11=5\\ 55÷55=1\end{array}$

The Positive Factors of 55 are therefore all the numbers used to divide (divisors) above to get an even number. Here is the list of all Positive Factors of 55 in numerical order:

1, 5, 11, and 55.