The special number 3,628,799

For N=1 to 10:

3,628,799/N always gives you remainder as (N-1)

3,628,799 / 1 gives you remainder 0

3,628,799 / 2 gives you remainder 1

3,628,799 / 3 gives you remainder 2

3,628,799 / 4 gives you remainder 3

3,628,799 / 5 gives you remainder 4

3,628,799 / 6 gives you remainder 5

3,628,799 / 7 gives you remainder 6

3,628,799 / 8 gives you remainder 7

3,628,799 / 9 gives you remainder 8

3,628,799 / 10 gives you remainder 9

Also for N=0 to 9:

(3,628,799-N)/(N+1) always gives you a whole number

(3,628,799-0) / 1 = 3,628,799

(3,628,799-1) / 2 = 1,814,399

(3,628,799-2) / 3 = 1,209,599

(3,628,799-3) / 4 = 907,199

(3,628,799-4) / 5 = 725,759

(3,628,799-5) / 6 = 604,799

(3,628,799-6) / 7 = 518,399

(3,628,799-7) / 8 = 453,599

(3,628,799-8) / 9 = 403,199

The trick is that 3,628,799=10!13,628,799 = 10!-1

#NumberTheory

Note by Mohammad Farhat
2 years, 9 months ago

No vote yet
1 vote

  Easy Math Editor

This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

When posting on Brilliant:

  • Use the emojis to react to an explanation, whether you're congratulating a job well done , or just really confused .
  • Ask specific questions about the challenge or the steps in somebody's explanation. Well-posed questions can add a lot to the discussion, but posting "I don't understand!" doesn't help anyone.
  • Try to contribute something new to the discussion, whether it is an extension, generalization or other idea related to the challenge.
  • Stay on topic — we're all here to learn more about math and science, not to hear about your favorite get-rich-quick scheme or current world events.

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold

- bulleted
- list

  • bulleted
  • list

1. numbered
2. 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 1

paragraph 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 2×3 2 \times 3
2^{34} 234 2^{34}
a_{i-1} ai1 a_{i-1}
\frac{2}{3} 23 \frac{2}{3}
\sqrt{2} 2 \sqrt{2}
\sum_{i=1}^3 i=13 \sum_{i=1}^3
\sin \theta sinθ \sin \theta
\boxed{123} 123 \boxed{123}

Comments

I noticed the "trick" as soon as I read the name of the note as 3,628,799... :D

Syed Hamza Khalid - 2 years, 8 months ago
×

Problem Loading...

Note Loading...

Set Loading...