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integers

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Source: — Data Sufficiency |

by reachac » Wed Jul 23, 2008 5:14 am
imo c
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by cubicle_bound_misfit » Wed Jul 23, 2008 6:51 am
IMO it is C.

stmt 1 does not talk about P
stmt 2 both can be negative or positive.

combining n> -1 and np>0 as n is integr it can not be 0 so n starts from 1 so does p.

regards,
Cubicle Bound Misfit
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by ravibits » Wed Jul 23, 2008 9:36 pm
Answer would be C.

Explanation:
Option 1 doesn't give any conclusive explanation regarding the range of P.
Option 2 says np>0 so both of them are either positive or negative. So, alone cannot be sufficient to say p>0

Using both of them, np>0 so n is not equal to 0 and p is not equal to 0. and since n>-1, n can only be positive. since np>0, p should also be positive!
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by auntsom » Wed Jul 23, 2008 10:26 pm
IMO E.

1) n+1>0
2) np>0

From 1) it means that n > -1 , so n can still be negative number such as -0.5 or it can also be a positive number such as 2.

If n = -0.5, then p must be negative in order to make np>0
If n = 2, then p must be positive in order to make np>0

Therefore, it's inconclusive that p is positiveor nagative.
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by msd_2008 » Thu Jul 24, 2008 12:12 am
How can we consider value of n as -0.5, when it is clearly mentioned that n & p are integers?
The value can be either 1 or 2 or any other number more than -1. What do you think?

MSD
When the going gets tough, the tough gets going.
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by auntsom » Thu Jul 24, 2008 1:41 am
Oh...yes that's my mistake. It must be an integer. So the answer is C
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by mbaapplicant2008 » Thu Oct 30, 2008 7:34 pm
It should be C because n can be 0.
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