Factoring and Multiples

# What is the hcf 21 84 91?

###### Wiki User

The HCF of 21, 84 and 91 is.... 1 ! The number 91 is a prime number.

๐
0
๐คจ
0
๐ฎ
0
๐
0
###### 2020-06-07 11:37:06
no it isnt weirdo

this is 7

๐
1
๐คจ
1
๐ฎ
1
๐
1

## Related Questions

If you mean: 21, 49 and 84 then the HCF is 7

GCF (21, 84, 91) = 7Factors of 21: 1, 3, 7, 21Factors of 84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84Factors of 91: 1, 7, 13, 91GCF (21, 84, 91) = 7

7 is the highest common factor of 21, 77 and 91.

49 = 7 x 7, 21 = 7 x 3, 91 = 7 x 13. HCF is 7

7 is the highest common factor of 21, 77 and 91.

Factors of 21: 1, 3, 7, 21Factors of 84: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84Factors of 91: 1, 7, 13, 91GCF (21, 84, 91) = 7

The GCF/HCF of 21 and 91 is 7. 21 = 3 x 7 91 = 7 x 13

HCF(10, 84) = 2 HCF(10, 84) = 2 HCF(10, 84) = 2 HCF(10, 84) = 2

First you express the numbers as the product of their prime factors: 28 = 2x2x7 21 = 3x7 Next you find the HCF. In this case, the HCF is 7. Finally, you multiply the numbers together and divide by the HCF. 28x21/7 = 84 Therefore the LCM of 28 and 21 is 84.

84 : 104 = 21 : 26 (simplifying by dividing both sides of the ration by the hcf(84, 104) = 4)

The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 The factors of 91 are: 1, 7, 13, 91

###### Math and ArithmeticFactoring and MultiplesAlgebra

Copyright ยฉ 2021 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.