Question 191
How many positive integer solutions satisfy the double inequality $2000\lt \sqrt{n(n+1)}\lt 2005$?
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
MathNet 2006 — Part 02 Question 191
Math Olympiad Vault · MathNet 2006 — Part 02