Question 549835
{{{(n+1)/2^n = 1/2}}}
<pre>
Try out the possible answers and see which one(s) works:

Try a. 1

{{{(n+1)/2^n = 1/2}}}
{{{(1+1)/2^1 = 1/2}}}
{{{2/2 = 1/2}}}
{{{1 = 1/2}}}

No, that's false.


Try b. 2

{{{(n+1)/2^n = 1/2}}}
{{{(2+1)/2^2 = 1/2}}}
{{{3/4 = 1/2}}}

No, that's false.

Try c. 3

{{{(n+1)/2^n = 1/2}}}
{{{(3+1)/2^3 = 1/2}}}
{{{4/8 = 1/2}}}
{{{1/2 = 1/2}}}

Yes, that's true.

Try d. 4

{{{(n+1)/2^n = 1/2}}}
{{{(4+1)/2^4 = 1/2}}}
{{{5/16 = 1/2}}}

No, that's false.

Try e. 5

{{{(n+1)/2^n = 1/2}}}
{{{(5+1)/2^5 = 1/2}}}
{{{6/32 = 1/2}}}
{{{3/16 = 1/2}}}

No, that's false.

Looks like c. 3 is the only one that works.

This demonstrates a trick for you to use when you are
taking a multiple choice test.  If you run into a 
problem that you don't know how to solve directly, 
try out all the possible choices.

Edwin</pre>