Question

A boy found that four matchsticks are required to make a square, eight for two squares and so on. He was fascinated and developed a rule so as to calculate the number of matchsticks for any number of squares he needs to form. Calculate the number of matchsticks required for making 10 squares.

• A. 20
• B. 30
• C. 40
• D. 50

Answer 1

The correct option is C

40

The rule for finding the number of matchsticks required for making n squares is '4n'.

So, for making 10 squares we need to put 10 in place of 'n'.

Hence the number of matchsticks required = 4 x 10 = 40.