amazingxin777

Maybe it is \(2^6\) but you probably have to minus the repeats.

Ur welcome!

wish i could have helped better... 

There are 5 choices for the president and 4 choices for the vice-president (since there has already been someone chosen for the president). 

Once you multiply 5 \(\times\) 4 = \(\boxed {20}\)

my favorite method when i can't solve a problem is trial and error

maybe this link will help

thanks!

what do you mean? 

whenever i go to the link all i see is black

isn't this a math problem?

then why is it off-topic?