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.
- R
- S
- T
- U
Find the columns or rows with more clues.
(a)
R = 13 - 9 - 1 = 3
(b)
S = 13 - 3 - 7 = 3
(c)
T = 13 - 3 - 8 = 2
(d)
U = 13 - 2 - 1 = 10
Answer(s): (a) 3; (b) 3; (c) 2; (d) 10