Question

Hola!!

Answer my Question..

1. A two digit number is obtained by either multiplying the sum of the digits by 8 & adding 1, or by multiplying the difference of the digits by 13 & adding 2. Find the number. How many such numbers are there?

Answer 1

Let ten's digit = z and unit digit = y.

10x + y = 8(x+y) + 1

&

10x + y = 13(x-y)+2

solve

number 41

Answer 2

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