Q. 19

By using dot (.) patterns, which of the following numbers can be arranged in all the three ways namely a line, a triangle and a rectangle?
A. 9

B. 10

C. 11

D. 12

Answer :

A triangle can’t be made by 3 dots, 11 dots or 12 dots and a rectangle can’t be made by 11 dots, hence option A, C and D are incorrect.

A line, a triangle and a rectangle can be drawn by 10 dots as shown,




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