9.If 500 is the multiple of 100 that is closest to X and 400 is the multiple of 100 closest to Y, then which multiple of 100 closest to X + Y ? (1) X < 500 (2) Y < 400 这道题 读的很费劲。。。第一个条件怎么就表示 450≤x<550 呢？ 还有第二个题。。 If p is a positive odd integer, what is the remainder when p is divided by 4 ? (1) When p is divided by 8, the remainder is 5. (2) p is the sum of the squares of two positive integers.
