adb

Another one.... if x options a) -x b) -1 c) 1 d) x e) squareroot(x) I marked the answer as D where as the OA is A(-x) Explanation please!

70,75,80,85,90,105,105,130,130,130 The list shown consists of the times, in second, that it took each of the 10 schoolchildred to run a distance of 100 meters. If the standard deviation of the 10 running times is 22.4 seconds, rounded to the nearest tenth of a second, how many of the 10 running times are more than 1 standard deviation below the mean of the 10 running times? I solved the question in the follwoing manner Total: 1000 Mean: 1000/10 = 100 Mean - 1 standard deviation : 100 - 22.4= 77.6 Number of Speeds above 77.6: 5(80,85,90,105,130) the official answer is 2. can some one help me get this? this is a question from GMATPrep

First of congrats dude!! I am sorry if this is a repeat or it is some thing every one knows :) what are GMAT sets? Are these the paper test availble at MBA.com??? where can i get these?? thanks, adb

Congratulations!!! quick question.....did the OG quant and verbal reviews(separate books) of any use?