A plant has two leaves on the first day. The number of leaves increases by 5 each day. The number of leaves on the 15th day will be ____?
- 52
- 62
- 72
- None of these
Explanation
Day 1: 2 leaves
Increase per day = 5
Day 15: 2 + (15-1)×5 = 2 + 14×5 = 2 + 70 = 72
Last verified on 07-01-2026
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