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Home » The sum of the first n terms of an AP is (3n + 6n). The common difference of the AP is
The sum of the first n terms of an AP is (3n + 6n). The common difference of the AP is
Arithmetic Progression | CBSE | Class 10 | Maths | RS Aggarwal
The sum of the first n terms of an AP is (3n + 6n). The common difference of the AP is

(a) 6                  (b) 9               (c) 15                  (d) -3

Solution: (a) b

i

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