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Q : 4     Which of the following are APs ? If they form an AP, find the common difference d and write three more terms.

              (i)  \small 2,4,8,12,...

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Given series is
\small 2,4,8,12,...
Now,
first term to this series is = 2
Now,
a_1 = 2 \ \ and \ \ a_2 = 4 \ \ and \ \ a_3 = 8
a_2-a_1 = 4-2 = 2
a_3-a_2 = 8-4 = 4
We can clearly see that the difference between terms are not equal 
Hence, given series is not an AP
 

Posted by

Gautam harsolia

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