niks18 wrote:
fitzpratik wrote:
If m>n, then is mn divisible by 3?
1. The remainder when m+n is divided by 6 is 5.
2. The remainder when m-n is divided by 6 is 3.
1. The remainder when m+n is divided by 6 is 5.
2. The remainder when m-n is divided by 6 is 3.
We need the value of both m & n to solve the question
Statement 1: let m+n=6k+5-----------------------(1)
from this equation we cannot find the value of m or n. Hence Insufficient
Statement 2: let m-n=6q+3------------------------(2)
from this equation we cannot find the value of m or n. Hence Insufficient
Combining 1 & 2: add equation
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