check weather 3 is the factors of the following numbers or not.
57. 72. 84.
plz give me answer step by step
Answers
Answered by
1
Answer:
Yes three is factors the numbers 57,72,84
Step-by-step explanation:
57÷3=19
72÷3=24
84÷3=28
So the numbers 57,72,84 are factors of three
Answered by
1
3 is a factor of all of the numbers.
Simplest way to check is adding the digits:
e.g. in 57, add 5 and 7 - you get 12. 12 is a multiple of 3, so 3 is a factor of 57
Longer way to check is by doing prime factorisation of all of the numbers:
e.g. 57 is 3 x 19 → if 3 is one of the prime factors, then it is a factor of the number
Simplest way to check is adding the digits:
e.g. in 57, add 5 and 7 - you get 12. 12 is a multiple of 3, so 3 is a factor of 57
Longer way to check is by doing prime factorisation of all of the numbers:
e.g. 57 is 3 x 19 → if 3 is one of the prime factors, then it is a factor of the number
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