EduGoog
Choose or find odd number pair

(81 - 63) , (24 - 48) , (21 - 15) , (13 - 39)

Option:
A. 81 - 63
B. 24 - 48
C. 21 - 15
D. 13 - 39
Answer: A . 81 - 63

Justification: This is the only group in which the sum of the digit of both the numbers is the same.

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