a„ = 20 and Sn = 399

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In an AP if a = 1, a„ = 20 and Sn = 399, then n is
23
Nov
In an AP if a = 1, a„ = 20 and Sn = 399, then n is a„ = 20 and Sn = 399 In an AP if a = 1 then n is November 23, 2020 Category: Chapter 5 - Arithmetic Progressions , Maths , NCERT Class 10 ,
Posted in: Chapter 5 - Arithmetic Progressions , Maths , NCERT Class 10 ,
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