Question

12 . The sum of the digits of a two-digit number is 11 . If 63 is subtracted from the number, the digits get interchanged . What is the number? (1) 38 (2) 83 (3) 92 (4)29

Answer 1

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HERE IS UR ANSWER _______

LET TWO DIGIT NO. BE 10 y + x

ACCORDING TO FIRST CONDITION ,

=> 10 y + x - 63 = 10 x + y

=> 10 y + x - 10 x - y = 63

=> 9 y - 9 x = 63

=> y - x = 7

GIVEN -
y + x = 11

y - x = 7
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2 y = 4

y = 2

x = 9

SO , TWO DIGIT NO. IS 29 .

Answer 2

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