If the sum of n consecutive integers starting from 1 is 210, what is n?
✓ Correct Answer: Option A
Sum = n(n+1)/2 = 210. n(n+1) = 420. 20 × 21 = 420, so n = 20.
📚 About This GRE Exam Prep Practice Question
This 2-level GRE Exam Prep question from the Quantitative Reasoning topic is part of BrainForge Quiz's free exam preparation library. Each question includes the correct answer and a detailed explanation to help you understand the underlying concept, not just memorize the answer.
How to use this page: Read the question above, consider all four options (A through D), then check the highlighted correct answer and explanation. For active timed practice, start a free GRE Exam Prep practice test or use flashcards for spaced repetition review.