Find the missing numbers.
The sum of the 3 numbers across the square is 13. The sum of the 3 numbers down the square is also 13.
- N
- P
- Q
- R
Find the columns or rows with more clues.
(a)
N = 13 - 7 - 1 = 5
(b)
P = 13 - 5 - 5 = 3
(c)
Q = 13 - 3 - 6 = 4
(d)
R = 13 - 4 - 1 = 8
Answer(s): (a) 5; (b) 3; (c) 4; (d) 8