what is general formula of a. p
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For example, the series of natural numbers: 1, 2, 3, 4, 5, 6,… is an AP, which has a common difference between two successive terms (say 1 and 2) equal to 1 (2 -1).
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Formula Lists.
General Form of AP a, a + d, a + 2d, a + 3d, . . .
The nth term of AP an = a + (n – 1) × d
Sum of n terms in AP S = n/2[2a + (n − 1) × d]
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The nth term of AP. an = a + (n – 1) × d. Sum of n terms in AP. S = n/2[2a + (n − 1) × d] Sum of all terms in a finite AP with the last term as 'l'
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