The next term of the sequence 2,4,8,16 is

Is the given sequence geometric?

Find the 10th term of the following geometric sequence

5, 20, 80, 320, ...

What would be the missing terms of the series

-1 - 5 - 25 - ... - 78125

Given the formula for a geometric sequence,  $a_1$   stands for $a_n=a_1r^{n-1}$  

 $a_n=a_1r^{n-1}$  

Given the formula for a geometric sequence , r stands for

 $a_n=a_1r^{n-1}$  

Find the 7th term in the sequence when the first term is 2, and the common ratio is 4

Find the sum of the finite geometric series:

Find the sum of the infinite geometric series, if it exists:

-3 + -3/2 + -3/4 + -3/8...