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Draw 4 straight lines and try and cover all 9 the dots.

+3 votes
2,238 views

.Draw 9 dots on a page, in the shape of three rows of three dots to form a square. Now place your pen on the page, draw 4 straight lines and try and cover all the dots.

posted Nov 10, 2013 by Mona Sharma

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Generalized Solution

No. of Dots    Required Straight Lines
3 x 3               (3 + 1) = 4
4 x 4               (4 + 2) = 6
5 x 5               (5 + 3) = 8
6 x 6               (6 + 4) = 10
n x n               (n+ (n - 2)) = 2n - 2

2 Answers (Check Answer ▼)





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