the sum of the digit of a 2- digit number is 8.if the digit are interchanged, the number obtained is 18 more than the original number . what is the original number?
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Answer:
No=1 0x + y
x + y = 8. (i)
10 y + x-18=IOx + y
-- 9x+9y=18
- x + y = 2. (2)
Add(1) and (2)
2 y=10
y=5,x=3
origl.No: 35
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