(72 - 45) , (51 - 24) , (46 - 20) , (32 - 13)
Option:
Justification: This is the only group in which the two numbers have no common factor.
Choose or find odd number pair
A. 72 - 45
B. 51 - 24
C. 46 - 20
D. 32 - 13
Answer: D . 32 - 13
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