PROBLEM #1
Which is more: 8 deciliters or 1 liter?

PROBLEM #2
x^2 = x + x + ......  (x times)
differentiating both sides gives:
2 x = 1+ 1 + ... (x times) = x
so 2 = 1.
What is fallacy?

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Problems from 06/23/11

PROBLEM # 1
What is the sum of interior angles of a 7-sided polygon?

SOLUTION 1
900 degrees.

SOLUTION 2
+- sqrt(2) (1 + i).

Congratulations to Kishore Balsara and Prabhakar Nadkarni, who were winners of the last set of puzzles.

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