Q. If 653xy is divisible by 80 then find the value of x+y.

80 = 8 * 10

So y = 0 (As it is divisible by 10)

Now 3x0 should be divisible by 8. X can be both 2 and 6.

The answer is 6. As per my calculation it can be both 2 and 6. Am i right ?

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- Jan 29th 2011, 01:08 AMvivek_master146Number system question
Q. If 653xy is divisible by 80 then find the value of x+y.

80 = 8 * 10

So y = 0 (As it is divisible by 10)

Now 3x0 should be divisible by 8. X can be both 2 and 6.

The answer is 6. As per my calculation it can be both 2 and 6. Am i right ? - Jan 29th 2011, 01:50 AMalexmahone
- Jan 29th 2011, 01:53 AMearboth