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by Bidisha_800 » Mon Feb 16, 2009 3:19 pm
Is quadrilateral Q a square?
(1) The sides of Q have the same length.
(2) The diagonals of Q have the same length
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Source: — Data Sufficiency |
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by naaga » Mon Feb 16, 2009 7:46 pm
I did this question earlier;

stmt I is insufficient
since parallelogram, rhombus also fall into the same category.

stmt II insufficient
since rectangle and trapezium fall into the same category

combining both it is sufficient
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by Bidisha_800 » Tue Feb 17, 2009 7:42 am
A parallelogram can have the both properties. what makes it a square ?
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by tini » Tue Feb 17, 2009 9:20 am
no . the diagonal of a rhombus can't be equal in length.so if they are equal in length then it is a square.
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by x2suresh » Tue Feb 17, 2009 10:27 pm
C should be the answer.

a rhombus is a quadrilateral whose four sides are all congruent

a square is a quadrilateral whose four sides are all congruent
and whose angles are all right angles
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