SAT Math Multiple Choice Practice Question 118: Answer and Explanation

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Question: 118

8. The sum of the odd numbers from 3 to 11, including both 3 and 11, is

A. 24
B. 32
C. 35
D. 45
E. 63

Correct Answer: C

Explanation:

C. Yes, you could just add up all the odd numbers from 3 to 11, but it's easier to take them in pairs: 3 plus 11 is 14, and so is 5 + 9. That's two 14s, which is 28; now you just have to include 7, which makes a total of 35.

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