In how many ways can a 12- question true and false exam be answered?

1 Answer
Oct 1, 2017

Answer:

4096

Explanation:

Since there are 12 questions, and each question can be answered in 2 ways then:

1st question can be answered in 2 ways.
2nd question can be answered in 2 ways.

The 2 questions can be answered in #2 xx 2# ways.
The 3 questions can be answered in #2xx2xx2# ways and so on.

So we have:

#2xx2xx2xx2xx2xx2xx2xx2xx2xx2xx2xx2=> 2^12= 4096#