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value of n

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value of n

by GmatKiss » Sat Oct 15, 2011 8:28 am
What is the value of n?

(1) n(n -1)(n - 2 ) = 0
(2) n^2 + n - 6 = 0

IMO:E
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by shankar.ashwin » Sat Oct 15, 2011 8:32 am
n=2 is the only option which satisfies both equations. C IMO
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by prodizy » Sun Oct 16, 2011 12:20 am
Clearly C.
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by garima99 » Sun Oct 16, 2011 12:23 am
C
solve the second eq u get -3,2 as roots whereas 0,1,2 are roots from 1 eq:
2 is common in both so C
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by saketk » Tue Oct 18, 2011 2:25 am
GmatKiss wrote:What is the value of n?

(1) n(n -1)(n - 2 ) = 0
(2) n^2 + n - 6 = 0

IMO:E
Stmt 1 : -- we will get 3 values of N (degree 3). The values are -- 0, 1, & 2 [NOT SUFFICIENT]

Stmt 2: -- we will get 2 values of N (quadratic equation). The values are: 2, & -3. [ NOT SUFFICIENT]

Combine both statement we have the common value of n = 2. [ Sufficient]

Option C
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