The factors of 21 are 1, 3, 7 and 21. Factor pairs of the number 21 are the numbers that result in original number on multiplying them together.
Step-by-step explanation:
We know that 1 multiplies with 21 to make 21, so they are both factors. 2 is not a factor of 21, because we cannot multiply it with another whole number to make 21.3 is a factor of 21, because it multiplies with 7 to make 21. Therefore the factors of 21 are 1, 3, 7 and 21.
Answers & Comments
Answer:
7x3
3x7
Step-by-step explanation:
Answer:
The factors of 21 are 1, 3, 7 and 21. Factor pairs of the number 21 are the numbers that result in original number on multiplying them together.
Step-by-step explanation:
We know that 1 multiplies with 21 to make 21, so they are both factors. 2 is not a factor of 21, because we cannot multiply it with another whole number to make 21.3 is a factor of 21, because it multiplies with 7 to make 21. Therefore the factors of 21 are 1, 3, 7 and 21.