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Engineering
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18. | The number obtained by interchanging the two digits of a two-digit number is less than the original number by 45. If the sum of the two digits of the number so obtained is 13, then what is the original number? | |
A. | 49 | |
B. | 94 | |
C. | 83 | |
D. | Either (a) or (b) | |