If p is a positive number, what is the value of p?
1. Modulus p-2 = 1 (I hope one can imagine the modulus around p-2)
2. p^2=4p-3
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melguy
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Statement 1
|p-2|= 1
So p-2 = 1 (i.e. p = +3)
or p-2 = -1 (i.e. p = +1)
Not Sufficient
Statement 2
p^2 = 4p - 3
p^2 - 4p + 3 = 0
(p-3) (p-1) = 0
p = + 3 or p = +1
Not Sufficient
Combine
p = +3 and + 1 is the common value in both statements.
Answer should be E
|p-2|= 1
So p-2 = 1 (i.e. p = +3)
or p-2 = -1 (i.e. p = +1)
Not Sufficient
Statement 2
p^2 = 4p - 3
p^2 - 4p + 3 = 0
(p-3) (p-1) = 0
p = + 3 or p = +1
Not Sufficient
Combine
p = +3 and + 1 is the common value in both statements.
Answer should be E
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vinay1983
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Correct!melguy wrote:Statement 1
|p-2|= 1
So p-2 = 1 (i.e. p = +3)
or p-2 = -1 (i.e. p = +1)
Not Sufficient
Statement 2
p^2 = 4p - 3
p^2 - 4p + 3 = 0
(p-3) (p-1) = 0
p = + 3 or p = +1
Not Sufficient
Combine
p = +3 and + 1 is the common value in both statements.
Answer should be E
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