If the sum of the 6th and 15th elements of an arithmetic progression i – McqOptions

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1.	If the sum of the 6th and 15th elements of an arithmetic progression is equal to the sum of 7th, 10th and 12th elements of the same progression. Which element of the series should necessarily be equal to zero?
A.	10th
B.	8th
C.	1st
D.	None of these
Answer» C. 1st

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