Squares are made in a row from matchsticks: 1 square needs 4 sticks, 2 squares need 7, 3 squares need 10. How many sticks are needed for 15 squares?

  1. 49
  2. 60
  3. 45
  4. 46
Answer

D) 46

Each new square adds 3 sticks: sticks = 3n + 1 = 3(15) + 1 = 46. SLO M-09-A-10 · Understanding

Mathematics MCQ · More Sets and Functions MCQs · Practise