ĐỀ THI TOÁN APMO (CHÂU Á THÁI BÌNH DƯƠNG)_ĐỀ 8 pps
... is of the form τ i , where i is an integer (not necessarily positive). (Solution) We will prove this statement by induction using the equality τ 2 = τ + 1. If n = 1, then 1 = τ 0 . Suppose that ... is similar to the triangle SP X. Consequently, XS XP = MP MA = XP 2MA and XP P S = MA AP . From this and the above observation follows XS XP · P T P B = XP 2MA · P A P S = XP 2MA · MA XP = 1 2 . .....
Ngày tải lên: 05/08/2014, 10:22
ĐỀ THI TOÁN APMO (CHÂU Á THÁI BÌNH DƯƠNG)_ĐỀ 18 ppsx
... of 6, 6, 66, 66, 666, 666, 6666, 6666, 66666, 66666, 666666, 666666? (A) (B) 234 5 (C) (D) 234 56 (E) 65432 4. Let S and S 2 be two circles having the same center and with radii ... number is divisible by 6 (A) None (B) I only (C) I and II only (D) I and III only (E) All . 32 232 (27 3(27) (7) 3(27)(7) 7 ) equals (A) 2 (B) 8 (C) 6 (34)...
Ngày tải lên: 05/08/2014, 10:22