-2 ,4 , -8 , 16 are in AP or not – InterviewSolution

1.	-2 ,4 , -8 , 16 are in AP or not
Answer» Not a APStep-by-step explanation:a1 = -2a2 = 4a3 = -8a4 = 16difference , D1 = a2-a1=(4)-(2)=2difference , d2 = a3-a2=(-8)-(4)=-12difference , d3 = a4-a3=(16)-(-8)=24since the common DIFFERENCE not same at all THEREFORE these is not AP.

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