Question 10
Sequences and SeriesFind the 21st term of the Arithmetic Progression (AP): −4, −1.5, 1, 3.5, …
- A.43.5
- B.46
- C.48.5
- D.51
Show the answer and explanation
Answer: B (46)
Explanation
a = −4, d = 2.5. T₂₁ = −4 + 20(2.5) = 46.
Find the 21st term of the Arithmetic Progression (AP): −4, −1.5, 1, 3.5, …
Answer: B (46)
a = −4, d = 2.5. T₂₁ = −4 + 20(2.5) = 46.