A) 7+7+7+............. to 8 times
B) 8+8+8+............. to 7 times
C) (7 + 7 + 7 + ............ to 8 times) + (8 + 8 + 8 + ....... to 7 times)
D) Both [a] and [b]
E) None of these
Correct Answer: D
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