the digits of a two digit number differ by 3. if the digits are interchanged and the resulting number is added to the original number, we get 121. find the orignal number
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Answer:
I don't know
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Step-by-step explanation:
let digit at tens place is x
digit at first place = x+3
number = 10x+x+3=11x+3
if number is interchanged it becomes 10x+30+x
=11x+30
sum of both=121=22x+33
22x=88
x=88/22
x=4
hence original number=11*3+3=33+3=36
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