- A10
- B9
- C11
- D8
Step-by-Step Solution
a = 23, d = -2, an = 5. 5 = 23 + (n-1)(-2) gives -18 = -2(n-1), n-1 = 9, n = 10.
Answer: A) 10
In a flower bed, the first row has 23 rose plants, the next 21, then 19 and so on. The last row has 5 plants. How many rows are there?
Class 10AP Word ProblemsAlgebra — Sequences
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