Friday, March 20, 2009

PUZZLE

PUZZLE:

The square of a positive integer is more than its five times by 14. What is the positive integer?



ANSWER: The positive Integer is 7


EXPLANATION: Let the positive integer be 'x'.

Mathematically it can be represented as x^2=5x+14

==>x^2-5x-14=0.

Solving the above equation we get x=7 & x=-2

Since the question is about positive integer, therefore x=7 is the correct answer

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