Mathematics Teaser

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Using two vertical and two horizontal grid lines, a square is divided into nine equal smaller squares of the same size,and marked by numbers 1 to 9. Nine different coins weighing 0.2gm,0.4gm,0.6gm,0.8gm,1.0gm,1.2gm,1.4gm,1.6gm and 1.8gm are to be placed , one in each square :

If the sum of the weights along the three rows,the three columns and the two diagonals are the same , how many different arrangements are possible?

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Reasoning Teaser

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Directions: A quiz has three rounds of two questions each. In the first round each correct answer carries 10 points and each incorrect answer carries a penalty of 5 points. If both the questions are answered correctly, a bonus of 5 points is awarded. In the second round each correct and incorrect answer carries the same points as in round 1. However, an additional penalty of 5 points is awarded if both the questions are answered incorrectly. In

round three each correct answer carries 20 points and each incorrect answer carries a penalty of 10 points.

If four answers are incorrect, then maximum possible score is

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