If in a three-digit number the last two digits' places are interchanged, a new number is formed which is greater than the original number by 45. What is the difference between the last two digits of that number?
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original No:l00Z+lOy+x:..........
New No: 100+10X+y........ - (2)
difference=45
(1) - (2) ->9x-9y=45
We get x-y=5
diff. of last 2 digits=5. Ans
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