Free Practice Question
PS · Problem Solving
705-805
Number Properties
'A' is the set of the first 100 positive integers. What is the minimum number of elements that should be picked from 'A' to ensure that at least one pair of numbers whose difference is 10 is picked?
Answer Choices
Sign in to reveal the correct answerA
15
B
30
C
51
D
55
E
70
Reveal the correct answer
Sign in for free to check your answer and unlock the full explanation.
Track your performance and improve
Get detailed analytics, unlock full explanations, and move up difficulty tiers as you practice.
Explanation
Unlock the full explanation
Create a free account to reveal the correct answer, see the step-by-step explanation, and start tracking your GMAT progress.
Comments
Sign in to join the discussion
No comments yet
Be the first to share your thoughts and help others understand it better.
Sign in to commentDetails
Difficulty
705-805
Type
PS
Category