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A rectangular game board measures 126 centimeters by 90 centimeters. The game board is divided into small squares of equal size.
A) find the longest possible length of the side of one of the small square. 18 centimeters. ANSWER
B) find the least number of squares the game board can be equally divided into. 7*5 = 35 squares. ANSWER
Rationale : because 126 = 18*7 and 90 = 18*5, and 7 and 5 are relatively prime numbers.