Hi, not sure I followed you in the second para.....are you implying that the actual GMAT score is likely to be higher than the average score on MGMAT? May I also solicit views from Stacey from MGMAT on my below post.....it is really important! I agree with you, the MGMAT quant section is definitely ...

Thanks much Mitch..... Hi Mitch, How did you arrive at "2" good outcomes with every letter? why only ACDB and ADBC for A?....this logic is perhaps my missing link Thanks If we correctly put A in the 1st position, we have BCD left. We can't put B in the 2nd position, so our options for 2nd ...

Hi Mitch, How did you arrive at "2" good outcomes with every letter? why only ACDB and ADBC for A?....this logic is perhaps my missing link Thanks Tanya prepared 4 letters to be sent to 4 different addresses. For each letter she prepared an envelope with its correct address. If the 4 lette...

Probability

Q. Tanya prepared 4 letters to be sent to 4 different addresses. For each letter she prepared an envelope with its correct address. If the 4 letters are to be put into 4 envelopes at random, what is the probability that only 1 letter will be put its envelope with correct address? One of the answer e...

absolute value confusion

Source - GMATPrep

Q. Is Absolute value x = y - z?

1. x+y=z
2. x<0

My doubt:

1 can be rearranged to read : x= -(y-z) and hence abs val x = y-z.....sufficient

answer however is C....why is 1 insufficient and why do we need 2 to answer this?

Hi Outreach Thanks for replying and my apologies for not acknowledging earlier... here is my related doubt...let us say the letters and envelopes are L1,E1,L2,E2,L3,E3,L4,E4 now let us take your CIII.... Prob of correct envelope for L1 = 1/4 Prob of incorrect envelope for L2 = 2/3....(here L2 can pi...

so unless explicitly stated otherwise, one is to assume only distinct prime factors and not how many times they occur, right? If r and s are positive integers, is r/s an integer? 1. every factor of s is also a factor of r 2. every prime factor of s is also a prime factor of r If we are asked whether...

Mitch I now know what i been missing sight of - all integers will bear the same sign as that of the smallest or largest integers in this case.....(cant believe it took me so long to figure).....and incase you thought am a complete non starter in quant, I been scoring 51 regularly in practice tests (...