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In the MOCK test of CAT at 'IIM' a stude...

In the MOCK test of CAT at 'IIM' a student while doing the multiplication reversed the digits (i.e, tens to unit and unit to tens) of both the numbers respectively, still his answer was correct. Such a pair of numbers is :

A

16, 32

B

28, 42

C

31, 23

D

12, 63

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The correct Answer is:
D
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