alleryWhat is the sum 1 + 3 + 5 + 7 + 9?
A45
B24
C25
D20
Answer & Solution
Correct answer: C. 25
1. The sum of the first n odd numbers is n squared.
2. There are 5 odd numbers.
3. 5 x 5 = 25.
_Source: Wikipedia, Square number (CC BY-SA 4.0), Square number_
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