Find the missing numbers.
The sum of the 3 numbers across the square is 10. The sum of the 3 numbers down the square is also 10.
- Z
- A
- B
- C
Find the columns or rows with more clues.
(a)
Z = 10 - 8 - 3 = -1
(b)
A = 10 - -1 - 6 = 5
(c)
B = 10 - 5 - 7 = -2
(d)
C = 10 - -2 - 3 = 9
Answer(s): (a) -1; (b) 5; (c) -2; (d) 9