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.
- R
- S
- T
- U
Find the columns or rows with more clues.
(a)
R = 10 - 6 - 2 = 2
(b)
S = 10 - 2 - 4 = 4
(c)
T = 10 - 4 - 5 = 1
(d)
U = 10 - 1 - 2 = 7
Answer(s): (a) 2; (b) 4; (c) 1; (d) 7