Free Practice Question
PS · Problem Solving
505-555
Arithmetic
What is the sum of all consecutive odd integers from −19 to 29, inclusive?
Answer Choices
Correct answer marked belowA
120
125
Correct
C
140
D
145
E
215
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Explanation
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Official Explanation
Official
The sequence includes negative odd integers and positive odd integers, specifically -19, -17, ..., -1 and then 1, 3, ..., 27, 29. The sum of the negative integers cancels out with the…
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Comments
2
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N
NominAug 27, 2024
Thank you very much!
N
NicoAug 20, 2024
Thank you very much!
What this question tests
What it tests
Your fluency with the order of operations, fractions, decimals, and basic number sense — the foundation every quant question leans on.
Common trap
Applying the order of operations out of sequence or rounding intermediate values before the final step.
Details
Difficulty
505-555
Type
PS
Category