Question

as directed ) Which two numbers have 7 as a common factor
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Answer 1

Answer:

21 and 14 is the number which common factor is 7.

21 =7×3

14=7×2

common factor= 7

Answer 2

Solution :-

we know that,

• common factor is also known as HCF .
• HCF = Product of least power of common factors .

So, we have to write numbers who has only common factor as 7 or whose HCF is equal to 7 .

Taking multiples of 7 we get :-

• 7 and 14 => HCF = 7
• 7 and 21 => HCF = 7
• 14 and 21 => HCF = 7
• 7 and 28 => HCF = 7
• 28 and 35 => HCF = 7
• 21 and 35 => HCF = 7

therefore, some possible two numbers whose common factor is 7 are given above .

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