52 factorial (or 52! in math notation) represents the number of ways a deck of cards can be shuffled. It’s equal to 52 x 51 x 50 x 49 x 48 x … 3 x 2 x 1. (Basically multiply all the whole numbers between 52 and 1 together. The video above (from 14:20 to about 18:30) explains how large 52 factorial is.

BEFORE YOU WATCH THE VIDEO make a hypothesis about how long 52! is in seconds. Is it an hour? A day? A week? A year? A lifetime? A number of lifetimes? Explain your reasoning in your hypothesis. Make this a paragraph.

Then watch the video above (from 14:20 to 18:30 at least — watch the whole thing if you want to see some cool card tricks) and write a second paragraph that compares the actual length of 52! seconds to your hypothesis.