Question

I am a factor of 84 and a common multiple of 3 and 7 .The sum of my digit is 3 .My digits are one apart. what number I am?

Answer 1

the answer will be 21 because
LCM of 3 and 7 is 21
21 is the factor of 84
and the sum is also 3

Answer 2

21 is the number which is  a factor of 84 and a common multiple of 3 and 7 .The sum of its digit is 3 and digits are one apart

Step-by-step explanation:

I am a factor of 84  - 1 , 2 , 3  , 4  , 6  , 7  , 12 , 14 , 21 , 28 , 42

a common multiple of 3 and 7  -  21 , 42  ,  63

The sum of my digit is 3   -   12  , 21 , 30

My digits are one apart.  12 & 21 have 1 digits apart

12 is not multiple of 3 & 7

Common in all is 21

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