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# Question about Jeff Sackmann sets

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Manager
Joined: 07 Dec 2008
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Concentration: Finance, Entrepreneurship
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07 Oct 2009, 20:56
I am looking on the Jeff Sackmann website and I see the Extreme Challenge, Data Sufficiency Challenge, and Problem Solving Challenge. Is there any overlap in the EC, and the DSC and the PSC? Are all three of these helpful? I have read on here that the EC is very useful, but what about the other ones. I am asking becuase there is a deal for the more you buy, so before doing so, I want to get feedback on the DSC and the PSC first.
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08 Oct 2009, 09:58
CaliCpa wrote:
I am looking on the Jeff Sackmann website and I see the Extreme Challenge, Data Sufficiency Challenge, and Problem Solving Challenge. Is there any overlap in the EC, and the DSC and the PSC? Are all three of these helpful? I have read on here that the EC is very useful, but what about the other ones. I am asking becuase there is a deal for the more you buy, so before doing so, I want to get feedback on the DSC and the PSC first.

I'd go ahead and contact Jeff. He's generally responsive to questions about his products.

I don't think anyone here has purchased the complete set from him.

Here is some general info about Jeff's math products:
760-q49-v44-my-gmat-progress-diary-78853.html?view-post=617183#p617183
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Manager
Joined: 07 Dec 2008
Posts: 244
Concentration: Finance, Entrepreneurship
GPA: 3.41
Followers: 2

Kudos [?]: 15 [0], given: 7

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09 Oct 2009, 13:06
I just recieved the extreme set in my email. Dang, these are really tough...now I know what everyone has been talking about...
Manager
Joined: 05 Nov 2009
Posts: 128
Concentration: Strategy, Finance
WE: Management Consulting (Consulting)
Followers: 1

Kudos [?]: 37 [0], given: 67

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05 Nov 2009, 06:27
Founder
Joined: 04 Dec 2002
Posts: 14959
Location: United States (WA)
GMAT 1: 750 Q49 V42
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05 Nov 2009, 07:00
Let's keep all discussions in the same place: questions-on-sackmann-s-math-book-85173.html
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# Question about Jeff Sackmann sets

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