Logical Relation Pattern — Hard Matrix Reasoning Question

What to learn from this pattern

each column's third cell keeps only the dots that appear in row 1 OR row 2 — but NOT both.

Explanation

Rule: each column's third cell keeps only the dots that appear in row 1 OR row 2 — but NOT both. • Look at column 3, rows 1 and 2. Note which dots they share and which are unique. • Remove any dot that appears in BOTH cells. • Keep only the dots that appear in exactly ONE of the two cells. • That gives 3 dots — matching option A. The other options are wrong because they use the wrong combining rule: union keeps all dots, intersection keeps shared dots, difference removes in one direction only, and the copy options ignore one cell entirely.

Why the other options are wrong

• Bwrong-operation-union — Applied union (∪) instead of symmetric difference (XOR).
• Cwrong-operation-intersection — Applied intersection (∩) instead of symmetric difference (XOR).
• Dwrong-operation-difference — Applied difference (−) instead of symmetric difference (XOR).
• Ecopied-first-input — Copied the first cell instead of combining the two.
• Fcopied-second-input — Copied the second cell instead of combining the two.