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Deepak Bora
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Find the common difference of the Arithmetic Progression (A.P.) 1/a ,(3-a)/3a ,(3-2a)/3a ,…….(a≠0)

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CBSE 10th Class past year question paper

Year 2019

SET 1, Code Number- 30/2/1

Question number – 3

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  1. This answer was edited.

    A.P is  1/ a, 3 -a /3a, 3 -2a/ 3a

    Common difference= second term- first term

    = { ( 3 – a ) / 3a } – 1/a

    = ( 3 – a – 3 )  / 3a

    = -1/3

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