A) 121
B) 81
C) 100
D) 64
Correct Answer: D
Solution :
From 1 to 15 there are 8 odd numbers. So, \[1\text{ }+3+5+7+....+\text{ }15\]\[=\text{ }8\text{ }\times \text{ }8\text{ }=\text{ }64\]You need to login to perform this action.
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