Put the numbers 1, 2, 3, 4 and 6 into the circles so that
each line of three numbers multiplies to 12
the total of the vertical line is one more than the total of the horizontal line.
each line of three numbers multiplies to 12
the total of the vertical line is one more than the total of the horizontal line.
Use each number once.
Answer
Worked Solution & Answer
Common factor is 1 in the centre: vertical line = 2 × 1 × 6 = 12 with sum 2 + 1 + 6 = 9 M1
horizontal line = 3 × 1 × 4 = 12 with sum 3 + 1 + 4 = 8
Since 9 = 8 + 1, all conditions are met. A1
horizontal line = 3 × 1 × 4 = 12 with sum 3 + 1 + 4 = 8
Since 9 = 8 + 1, all conditions are met. A1
Answer: Answer Centre: 1; Vertical: 2 and 6; Horizontal: 3 and 4