JEE Main 2026 Mathematics question
Let A₁,A₂,A₃,…,A₃₉ be 39 arithmetic means between the numbers 59 and 159. Then the mean of A₂₅, A₂₈, A₃₁ and A₃₆ is equal to:
Answer: (D)
Solution
With 41 terms total (including endpoints), common difference d=100/40=2.5. The four terms average to 134.