Question

Assuming that no questions are left unanswered, in how many ways can a six-question true-false quiz be answered?

Answer 1

In each question, we have two options True and False.

There are 6 questions.

We have 2 options for the first question, two options for the second question, two options for the third question, ...

We got

$2\times2\times2\times2\times2\times2=2^6$$=64$

Hence there are 64 ways to answer a six-question true-false quiz.

In general for n questions we get

$2^n\text{ ways }$