Question

The product of the digit of a two didit number is 8. If 63 is subtracted from the number, the digits are reversed find the number

Answer 1

Answer:

81

Step-by-step explanation:

numbers that give product as 8 are

2*4 and 1*8

if we take 24,reverse it and subtract 63 from it the answer is 39 which is not right

then:

we take 18 reverse it Which is 81 subtract 63 from it, the answer is 18 which is the number we got in the starting.

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Answer 2

$\huge\bf{Answer:-}$

Let p be the product and n be the number.

Product × Number = 18 Equation - (1)

$10 + n - 63 = 10n + p$

$9p - 9n - 63 = 0$

$9p - 9n = 63$

$p - n = 7 Equation - (2)$

$p = 7 + n$

Adding values of p for Equation - (1)

$7 + n × n = 18$

n² + 7n = 18

n² + 7n - 18 = 0

n² + 9n - 2n - 18 = 0

$n*n + 9 - 2*n + 9 = 0$

$n + 9*n - 2 = 0$

$n = -9$

$n = 2$

This negative values is not correct so,

2 = number

7 + 2 = 9 is the product

Therefore, product = 9

The Number =

$= 10*9 + 2 = 92$

Therefore, 92 is the two digit number