User contributions
- 12:15, 22 October 2008 (diff | hist) . . (+125) . . N 2001 IMO Problems/Problem 6 (New page: 6. K > L > M > N are positive integers such that KM + LN = (K + L - M + N)(-K + L + M + N). Prove that KL + MN is not prime.)
- 12:14, 22 October 2008 (diff | hist) . . (+169) . . N 2001 IMO Problems/Problem 5 (New page: 5. ABC is a triangle. X lies on BC and AX bisects angle A. Y lies on CA and BY bisects angle B. Angle A is 60o. AB + BX = AY + YB. Find all possible values for angle B.)
- 12:13, 22 October 2008 (diff | hist) . . (+674) . . 2001 IMO Problems/Problem 1
- 02:43, 14 October 2008 (diff | hist) . . (+254) . . N 2001 IMO Problems/Problem 4 (New page: Let n1, n2, ... , nm be integers where m is odd. Let x = (x1, ... , xm) denote a permutation of the integers 1, 2, ... , m. Let f(x) = x1n1 + x2n2 + ... + xmnm. Show that for some distinct...)
