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# DS4-22

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11 Jun 2004, 19:35
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SVP
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11 Jun 2004, 19:36
ans with exp
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11 Jun 2004, 19:50
22-A
23-B

22- anything greater than 3 will yield a positive answer according to 1 while 2 is inconclusive

23- in 1, a or b could be negative or positive and different. 2 makes sure that a and b are equal and also bear the same sign
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11 Jun 2004, 21:39
22-1. k can be < 3, say, when 1 < k < 2, (k-1)(k-2)(k-3) > 0.

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11 Jun 2004, 22:31
E and B is the OA. Paul Halle explainations makes sense since it doesn't say anywhere that k has to be integer.
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11 Jun 2004, 22:34
Good point hallelujah. In the problem,it is not mentioned if k is an integer.
22.E
23.B
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12 Jun 2004, 01:41
Bhai wrote:

Neither of the statements is sufficient:

k = 1.5 is the example.
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12 Jun 2004, 01:44
Bhai wrote:
ans with exp

2 alone is sufficient:

a^3 = b^3 => for real numbers a and b a = b. => ab = a^2 = b^2.
Re: DS4-23   [#permalink] 12 Jun 2004, 01:44
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