In an A.P., given a = 7, a 13 = 35, find d and S 13 .

By formula, a n = a + (n - 1)d Given, ⇒ a 13 = 35 and a = 7. ⇒ 7 + (13 - 1)d = 35 ⇒ 7 + 12d = 35 ⇒ 12d = 28 ⇒ d = By formula, S n = Substituting values we get : Hence, d = and S 13 = 273.

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In an A.P., given a = 5, d = 3, a_n = 50, find n and S_n.

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In an A.P., given a₁₂ = 37, d = 3, find a and S₁₂.

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

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Mathematics

In an A.P., given a = 7, a₁₃ = 35, find d and S₁₃.

AP

Related Questions

In an A.P., given a = 5, d = 3, a_n = 50, find n and S_n.

In an A.P., given a₁₂ = 37, d = 3, find a and S₁₂.

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

Mathematics

In an A.P., given a = 7, a13 = 35, find d and S13.

AP

Related Questions

In an A.P., given a = 5, d = 3, an = 50, find n and Sn.

In an A.P., given a12 = 37, d = 3, find a and S12.

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

In an A.P., given a = 7, a₁₃ = 35, find d and S₁₃.

In an A.P., given a = 5, d = 3, a_n = 50, find n and S_n.

In an A.P., given a₁₂ = 37, d = 3, find a and S₁₂.

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