IKMC 2017 — Grades 5–6 Question 15

When we add the numbers in each row or each column, we get the results shown next to the board.



Which statement is true?

Editable table:

| | Column 1 | Column 2 | Row sum |
|---|---|---|---|
| Row 1 | $a$ | $b$ | 2 |
| Row 2 | $c$ | $d$ | 3 |
| Column sum | 1 | 4 | |