How many terms are there in 2, 4, 8, 16,..., 1024?	Choose the correct choice from the following answers
A) 14	B) 11	C) 12	D) 10	E) 8
2, 4, 8, 16, ..., 1024 is a G.P with a =2   and r =4/2= 
<gadget id="calculator">4/2</gadget>
<output>2</output>
2   Let the number of terms be n. Then   2 x 2 ^n-1= 1024   or 2^n-1 = 512 = 2^9   Thus n - 1 =9   n= 10   ANSWER:10
<result>D</result>
How many terms are there in 2, 4, 8, 16,..., 1024?