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Choose or find odd number pair

(11 - 115) , (10 - 90) , (9 - 72) , (8 - 56)

Option:
A. 11 - 115
B. 10 - 90
C. 9 - 72
D. 8 - 56
Answer: A . 11 - 115

Justification: In all other pairs, the sum of the two numbers is a perfect square.

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