Question

For an A.P., first term 'a', common difference 'd' and last term
P. If there are 'n' terms in this A.P., then sum of the all terms of
this A.P. is :

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Answer 1

Answer:

Sn = n/2 [ 2a + ( n - 1 ) d]

Step-by-step explanation:

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Answer 2

all of the above

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