How many terms are in the G.P. 3, 6, 12, 24, ......., 384 ,768,1536 Pick
A) 8
B) 9
C) 67
D) 5
E) 10
Explanation:   Here a = 3 and r = 6/3= 
<gadget id="calculator">6/3</gadget>
<output>2</output>
2. Let the number of terms be n.   Then, t= 384 =&gt; a * r^(n-1) = 1536   =&gt; 3 * 2^(n-1) = 1536 =&gt; 2^(n-1) = 512 = 2^(9)   =&gt; n-1 = 9 =&gt; n = 10   Answer: 10
<result>E</result>
How many terms are in the G.P. 3, 6, 12, 24, ......., 384 ,768,1536