More questions for practice... Where to find?

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GambitOS: Senior | Next Rank: 100 Posts; Posts: 40; Joined: Sat Feb 14, 2009 9:22 am; GMAT Score:460

by GambitOS » Fri Jul 31, 2009 1:09 am

Hello!

I know that I need a lot of questions for practice in math and verbal. But I thing that it is not enough questions in OG 10, OG 11, ect. So I want to know the books where I can find more that 1000 real questions for GMAT?

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Source: Beat The GMAT — GMAT Strategy | Fri Jul 31, 2009 1:09 am

VP_Jim: GMAT Instructor; Posts: 1223; Joined: Thu May 01, 2008 3:29 pmFollowed by: 15 members; Location: Los Angeles, CA; Thanked: 185 times

by VP_Jim » Fri Jul 31, 2009 4:59 pm

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.

Jim S. | GMAT Instructor | Veritas Prep

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GambitOS: Senior | Next Rank: 100 Posts; Posts: 40; Joined: Sat Feb 14, 2009 9:22 am; GMAT Score:460

by GambitOS » Fri Jul 31, 2009 10:48 pm

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

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JeffB: Master | Next Rank: 500 Posts; Posts: 153; Joined: Tue Jun 02, 2009 2:48 pm; Location: Ohio; Thanked: 16 times

gambit

by JeffB » Sat Aug 01, 2009 3:56 am

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

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VP_Jim: GMAT Instructor; Posts: 1223; Joined: Thu May 01, 2008 3:29 pmFollowed by: 15 members; Location: Los Angeles, CA; Thanked: 185 times

by VP_Jim » Sat Aug 01, 2009 7:04 am

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

Jim S. | GMAT Instructor | Veritas Prep

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