Q. 6 B5.0( 1 Vote )

Which of the following list of numbers form A.R's? If they form an A.P., find the common difference d and also write its next three terms.

2, 4, 8, 16, ...

Answer :

We have,


a2 – a1 = 4 – 2 = 2


a3 – a2 = 8 – 4 = 4


a4 – a3 = 16 – 8 = 8


i.e. ak+1 – ak is not same every time.


So, the given list of numbers do not form an AP.


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