Question

Stick tricks - Here are 15 sticks arranged into a grid. Which 3 sticks would you remove to leave 3 squares?

a) Remove sticks at positions 1, 7, 11.
b) Remove sticks at positions 3, 9, 14.
c) Remove sticks at positions 5, 10, 15.
d) Remove sticks at positions 2, 8, 13.

Answer 1

To leave 3 squares, the student should remove sticks at positions 1, 7, and 11. The correct option is a.

Step-by-step explanation:

To leave 3 squares, we need to remove sticks in such a way that each removed stick forms a side of a square. After analyzing the options given, the correct answer is option a) Remove sticks at positions 1, 7, 11.

By removing these sticks, we get three squares: one in the top left corner, one in the top right corner, and one in the bottom left corner. Therefore, the correct answer is option a) Remove sticks at positions 1, 7, 11.