Question

439*087 replace * by digit to make the number divisible by 11

Answer 1

439*087:87+0*+39+4=120+0* is divisible by 11 so ans is 1

Answer 2

I have learnt this method. If you know it!

439_087

4+9+0+7=20 +_
3+_+8=11+_

we have to subtract, and if the answer is 0 or 11, then the number is divisible by 11.

so, 20-11 = 9

so we either make it 0 or 11. Here we make it 0.

So, in the blank it will be 9.

as,

4+9+0+7=20
3+9+8=11+9= 20

therefore 20-20=0

 
Hope it helps!!
hope you understood.

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