For what value of k will k+9,2k-1 and 2k+7 are the consecutive terms o

1.	For what value of k will k+9,2k-1 and 2k+7 are the consecutive terms of an A.P?
Answer» My answer also k=18 Samjhe Agar ye consecutive terms of AP hain so( 2k-1)-(k+9)=(2k+7)-(2k-1) inke common difference equal honge Please explain it K=18

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