A fox leaves footprints in a straight line. The number of footprints in each row follows the pattern 3, 5, 7, ?. Find the number of footprints in the fourth row and the total number of footprints in all four rows.
Answer
24
The correct answer is 24 —
Step-by-step solution
- Find the total footprints.
Common mistake: Using the wrong difference in the pattern
Concept tested: Identifying arithmetic progression and summing
Published · How this solution was prepared and checked
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