I'm going to caution you not to forsake quality for quantity. Yes, more problems are good. However, don't move on to new materials until you truly understand everything. If you aren't scoring well after studying the OG, you do NOT need more problems. You need to go back and study the OG more because it didn't sink in the first time through.

In my opinion, the OG plus the verbal and quant supplements should be MORE than enough to keep you busy for months, if you're studying properly.

Great thanks for your advice VP_Jim!

I decided not to create the new topic but post one problem hard for me here:

When 10 is divided by the positive integer n, the remainder is n-4. Which is following could be the value of n?

(A) 3
(B) 4 (Correct answer) - but please explain my decision, I couldn't understand
(C) 7
(D) 8
(E) 12

Sometimes the quotient may be zero.

Take 3/5 for instance. The remainder is 3 because 0 is the biggest multiple of 5 that can be divided out of 3.

Just like your problem 4/10.

I believe the equation in algebraic form is:

x/N = Q + R/N

x = dividend
N = Divisor
Q=Quotient
R = Remainder

4/10 = 0 + 4/10

The answer is actually 7 (so, answer choice C). The easiest way to do it is to plug in the answer choices.