This may sound stupid but I do have a very basic question as to how to get around the MGMAT student portal. I want to do some Official guide problems related to book#5 that I have finished (Number Properties) but when I go to the HOME tab on the student center of this site >>>then click OG ...

I'm having a hard time understanding how the book tries to describe the logic of this question. If x is +ve integer, what is the units digit of x? 1) the units digit of x/10 = 4 2) The tens digit of 10x = 5 for #1They test a few cases suchs as 45, and 46 where the units digit=4 (4.5 &4.6) but th...