A two digit number ab is added to another number ba, which is obtained by revers

Question

A two digit number ab is added to another number ba, which is obtained by reversing the digits then we get three digit number. Thus (a + b) equals to:

Options:

A . at least 18

B . 2ab

C . 2(a + b)

D . (a + b) ≥ 10

Answer: Option D

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