If a1, a2, a3 are in airthemetic as well as geometric progression then – McqOptions

MCQOPTIONS

1.	If a₁, a₂, a₃ are in airthemetic as well as geometric progression then which of the following is/are correct?
A.	2a<sub>2</sub> = a<sub>1</sub> + a<sub>3</sub>
B.	a<sub>2</sub> = (a<sub>1</sub>a<sub>3</sub>)<sup>1/2</sup>
C.	a<sub>2</sub> a<sub>1</sub> = a<sub>3</sub> -a<sub>2</sub>
D.	All of the mentioned are correct
Answer» E.

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