if the sum of first n terms of an ap is 3k square minus k and it's common difference is 6 then find the first term
nickkaushiknick:
sum of n terms or sum of k term? it should be k terms, else it should be 3nSquare-n
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Answer:
Step-by-step explanation:
Sn=3ksquare -k
S1=3(1)square-1
So , A1is 3-1=2
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