Question

the difference between 2 digit number and the number obtained by in interchanging its digits is 63. whats the difference between the digits of the no.

Answer 1

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LET THE NUMBER BE:

$10y + x$

REVERSED NUMBER:

$10x + y$

Difference:

$- 10y + x - (10x + y) = 63$

$9y - 9x = 63$

$y - x = 7$

SO THE DIFFERENCE BETWEEN DIGITS OF THE NUMBER IS 7.