Q. 6 E

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.


Answer :

We have,





i.e. ak+1 – ak is the same every time.


So, the given list of numbers forms an AP with the common difference


Now, we have to find the next three terms.


We have


Now, we will find a5, a6 and a7


So,



and


Hence, the next three terms are


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