There will be a digit 1 in exactly one cell in each row and exactly one cell in each column.
|
|
|
|
75 |
|
|
|
|
28 |
|
|
|
|
12 |
|
|
|
|
45 |
50 |
20 |
42 |
27 |
|
From Mensa Puzzle Calendar 2018 by Fraser Simpson, Workman Publishing, New York. Puzzle for October 3.