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Source: — Data Sufficiency |
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by rajataga » Tue Jan 06, 2009 7:45 am
C

Stmnt 2 independently is obviously insufficient as it gives only 1 of the variables.

Stmnt 1
Now, try plugging in 10, and -10 as values of p and r.

You will get different answers.

Hence, stmnt 1 independently is also insufficient.

Now, together try 1, 10

The answer is the same.

Hence C[/b]
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by cramya » Tue Jan 06, 2009 9:42 am
https://www.beatthegmat.com/variables-t26771.html
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