GMAT一道数学题（data sufficiency）If l1,l2 and l3 are lines in a plane,is l1 perpendicular to l3?(1)l1 is perpendicular to l2 (2)l2 is perpendicular to l3是不是错了?

GMAT一道数学题, 一道GMAT的数学题 一道关于GMAT的数学题 GMAT一道数学题（data sufficiency）Is the integer n odd?(1)n is divisible by 3(2)2n is divisible by twice as many as positive integers as n GMAT一道数学题（data sufficiency）If l1,l2 and l3 are lines in a plane,is l1 perpendicular to l3?(1)l1 is perpendicular to l2 (2)l2 is perpendicular to l3是不是错了? 求解一道GMAT数学题……Is the number of members of ClubXgreater than thenumber of members of Club Y (1) Of the members of Club X,20 percent are alsomembers of Club Y.(2) Of the members of Club Y,30 percent are alsomembers of Club X.这是Data GMAT一道数学题(data sufficiency)求解Is the measure of one of the interior of quadrilateral ABCD eaqual to 60 degrees?(1)Two of the interior angels are right angels.(2)The degree measure of angel ABC is twice the degree measure of angel BCD.为 GMAT的一道题, 问一道GMAT的数学题2^x-2^x-2=3(2^13)求X 请教一道GMAT语法题 GMAT两道prep数学题如图 Gmat Gmat Gmat 求助一道GMAT数学题xyz三个点不在一条直线上,问yz>15?a.xy=40 b.xz=60 求解GMAT一道数学题[1/(2n-1)!]-[1/(2n+1)!]简化后等于an^2+bn+c,问a+b+c等于多少? 一道GMAT数学题求解= =1159000的0.001percentage是多少?为什么狗主算出来的是1.15我觉得是11.59 一道数学题,