Medium
Find the missing number in the grid:
Row 1: 2, 3, 6
Row 2: 4, 5, 20
Row 3: 6, 7, ?
Explanation
Explanation
Step 1: Look at Row 1: 2, 3, 6. Check 2 + 3 = 5 (not 6), but 2 × 3 = 6 ✓.
Step 2: Test Row 2: 4 × 5 = 20 ✓. So the third number is the product of the first two numbers in each row.
Step 3: Apply to Row 3: 6 × 7 = 42.
Answer: 42.
PRO TIP
Re-check your working by substituting the answer back into the original question.