If first term of an A. P. is a second term is b and last term is c, then show that sum of all the terms is (a+c) (b+c-2a)/2(b-a)?
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Nikii111:
see the question again
Ok one min
this is only the ans
But it in opposite diraction
That means olta
no
But i known only this
(a+c) (b+c-2a)/ 2(b-a)
Ok can you wait for few mis
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