Question

Write the set off all factors of 15 in roster form

Answer 1

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Given :

Set of all factors of 15.

To Find

Represent in roster form.

Solution:

Roster form : This is a set that lists all the elements of the set, separated by commas, within brackets. 15 = 1 x 15. 15 = 3 * 5.

All Factors of 15. 1 , 3 , 5 , 15. set of all factors of 15 in roster form = { 1 , 3 , 5 , 15 }

Answer 2

Answer:

Set of all factors of 15 = { 1 , 3 , 5 , 15 }

Step-by-step explanation:

Since we need to write the set in Roster form, we need to enclose all elements within curly braces {}.

A number x is a factor of y if x is able to divide y leaving remainder 0.

Now to find factors of 15, we check from 1 to 15 which numbers can divide 15 with remainder 0.

First, we find that 1 can divide 15 with remainder 0.

Then, on dividing 15 by 2, we get remainder 1. Thus, 2 is not a factor of 15.

Similarly, we find that 3 , 5 and 15 are also factors of 15.

Thus, the factors of 15 are 1,3,5 and 15.