### Three Non zero numbers a, b and c are in GP if B square is equal to AC - - Class XI Maths CBSE

Click this link for more videos on Maths for Class XI http://www.iedubook.com/subject/cbse-mathematics-isce-maths-6~.Three Non zero numbers a, b and c are in GP if B square is equal to AC. This method can be used to identify whether any Series is a GP.

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