Count the ways

Exercise and reference answers

Questions

1. Answer

   6

   Question

   3 pants and 2 shirts. How many pant and shirt pairs?

2. Answer

   12

   Question

   2 bags, 3 tiffin boxes and 2 bottles. How many combinations?

3. Answer

   10

   Question

   Digits on each wheel of the number lock?

4. Answer

   1

   Question

   What is zero factorial?

Instructions

Work it out and type the number.

Explanation