Question

Find the common difference $d$ and write three more terms if the following sequence is an AP:

$2,4,8,16,.$

Answer 1

$2,4,8,16,....$

$\Rightarrow$ Difference of second and first term $=4-2=2$

$\Rightarrow$ Difference of third and second term $=8-4=4$

$\Rightarrow$ Since, $2\ne 4$

$\Rightarrow$ Difference is not same.

Hence, it is not an $AP$