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Ans of all 4...and how to do it...

Ans of all 4...and how to do it...

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Grade:10

1 Answers

Harsh Patodia IIT Roorkee
askIITians Faculty 907 Points
6 years ago
Let number be ab
a+b=15
Original Number 10a+b
Reversed number 10b+a
Acc to question
10b+a = 10a + b + 9
9b-9a=9
b-a=1

Solving two equations you will get a=7 and b=8

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