Question 6
John uses 15 matches to form five small square cells as shown. What is the least number he must remove so that exactly three squares remain and every remaining match belongs to a square boundary?
Source clarification: The five stated squares are the small cells; the figure also contains a larger square, which must be counted in the final total.
Source clarification: The five stated squares are the small cells; the figure also contains a larger square, which must be counted in the final total.