# An interesting card trick

If you haven't seen this its here

Can you guys figure out the algorithm?

Note by Venture Hi
3 years, 8 months ago

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold
- bulleted- list
• bulleted
• list
1. numbered2. list
1. numbered
2. list
Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
MathAppears as
Remember to wrap math in $$...$$ or $...$ to ensure proper formatting.
2 \times 3 $$2 \times 3$$
2^{34} $$2^{34}$$
a_{i-1} $$a_{i-1}$$
\frac{2}{3} $$\frac{2}{3}$$
\sqrt{2} $$\sqrt{2}$$
\sum_{i=1}^3 $$\sum_{i=1}^3$$
\sin \theta $$\sin \theta$$
\boxed{123} $$\boxed{123}$$

Sort by:

The shuffling and carding does nothing to the placement of the selected 3 cards. It will always end up in position 6,22,38 on the 52 card stack. After removing each card to place them open and close ( odd is open and vice versa), the new positions are 8,16,24. Next iteration, the positions are 2, 6,10. Again, next iteration, 2,4,6. Last iteration, they are 1,2,3! Voila!

- 3 years, 8 months ago