How many squares of all sizes are there in a 2 × 2 grid of small squares?
Answer and explanation
Correct answer: A.
- Step 1: Squares of side 1, 2, ..., 2 number 4, 1. Step 2. The total is 5. **Answer: . Why not the others:** is what you get if you count only the small squares. is what you get if you miss some of the larger squares. is what you get if you double count the largest squares.
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