1.

If m and n are integers then is n completely divisible by 10? A. The value of "("(m)/(10)+(n)/(10)")" is a integer value. B. The value of "("(m)/(7)+(n)/(10)")" is an integer value. C. value of n is greater than m.

Answer»

Any TWO of them
A and B together
Any of them
All statements are required

Solution :From A `to m+n=10xxk` (let k is an INTEGER value)
From `B to 10m+7n=70xx1` (Let L is an integer value)
From `C tongtm`
From A and B
`({:(10m+10n,=,100k),(10m+7m,=,70l):})/({:(10n-7n,=,100k-70l),(3n,=,100k-70l):})`
`3n=10(10k-71):` HENCE n is divisible by 10. Thus option A and B together are needed to solve the question.


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