Advanced MathEasy–MediumSum of three consecutive integers
Advanced Math practice question
The smallest of three consecutive integers is n. Which expression gives the sum of the three integers?
- A. 3n + 3Correct
- B. 3n
- C. n + 3
- D. 3n + 6
Answer: A. 3n + 3
n + (n + 1) + (n + 2) = 3n + 3.
Why the other answers are wrong
- B. 3n
- Ignores the +1 and +2.
- C. n + 3
- Adds 3 to one integer instead of summing three.
- D. 3n + 6
- That is the sum starting from n + 1.
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