Jump to content

An amazing multiplication number puzzle

Mental Math
in Mathematics

Featured Replies

If you multiply two five digit numbers you can get the answer 123456789. Can you guess the two five digit numbers?

 

This is a very beautiful puzzle and you might think that a big mathematical theory should be hidden behind it. But in fact its beauty is only incidental.

 

Give it a try ...

.

.

.

Here is the Hint to help you solve the puzzle,

 

'Decompose the number (123456789) into its prime factors'.

 

123456789 = 3 x 3 x 3607 x 3803

 

Got it?

 

OK, check it with the solution … scroll down

.

.

.

.

.

 

Find the solution url removed

Edited by Phi for All
advertising url removed

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.