In an A.P., given a = 2, d = 8, S n = 90, find n and a n .

By formula, S n = Given, S n = 90 Since, no. of terms cannot be negative. ∴ n = 5. By formula, a n = a + (n - 1)d a 5 = 2 + (5 - 1) × 8 = 2 + 4 × 8 = 2 + 32 = 34. Hence, n = 5 and a n = 34.

In an A.P., given a₃ = 15, S₁₀ = 125, find d and a₁₀.

View Answer Bookmark Now

In an A.P., given d = 5, S₉ = 75, find a and a₉.

View Answer Bookmark Now

In an A.P., given a = 8, a_n = 62, S_n = 210, find n and d.

View Answer Bookmark Now

In an A.P., given a_n = 4, d = 2, S_n = -14, find n and a.

View Answer Bookmark Now

Mathematics

In an A.P., given a = 2, d = 8, S_n = 90, find n and a_n.

AP

Related Questions

In an A.P., given a₃ = 15, S₁₀ = 125, find d and a₁₀.

In an A.P., given d = 5, S₉ = 75, find a and a₉.

In an A.P., given a = 8, a_n = 62, S_n = 210, find n and d.

In an A.P., given a_n = 4, d = 2, S_n = -14, find n and a.

Mathematics

In an A.P., given a = 2, d = 8, Sn = 90, find n and an.

AP

Related Questions

In an A.P., given a3 = 15, S10 = 125, find d and a10.

In an A.P., given d = 5, S9 = 75, find a and a9.

In an A.P., given a = 8, an = 62, Sn = 210, find n and d.

In an A.P., given an = 4, d = 2, Sn = -14, find n and a.

In an A.P., given a = 2, d = 8, S_n = 90, find n and a_n.

In an A.P., given a₃ = 15, S₁₀ = 125, find d and a₁₀.

In an A.P., given d = 5, S₉ = 75, find a and a₉.

In an A.P., given a = 8, a_n = 62, S_n = 210, find n and d.

In an A.P., given a_n = 4, d = 2, S_n = -14, find n and a.