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Grade: 10

                        

The sum of n terms of an ap is n squares.find its common difference.

4 years ago

Answers : (1)

Vikas TU
12274 Points
							
(n/2)(a + l) = n^2
a + l = 2n
l = 2n – a
l = a + (n-1)d = 2n – a
d = 2(n – a)/(n-1)
where a would be the first term always.
4 years ago
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