Question

Find the 11th term of the progression 4,8,16.......​

Answer 1

`a_(11) =4096`

Explanation:

4, 8, 16,.....

1. Find the common ratio

second term/first term = 8/4 = 2 = r (the common ratio)

2. Write the rule, and evaluate for the 11 term.

`a_(n) = a_(1)r^(n-1)`

`a_(11) = 4 (2^(11-1))`

`a_(11) = 4 (2^(10))`

`a_(11) = 4(1024)`

`a_(11) =4096`

Answer 2

4096

Explanation:

you just multiply the previous number by two