Sitting here idling away the hours, I have come up with a game based on an article someone sent me about the number 6174 which has some mathematical properties that apparently are “interesting”.
Here is the game.
Hopefully you can follow the instructions and will accept the challenge ![]()
A game using numbers
Objective – arrive at number 6174 by doing the below steps
Click hare to see steps
Step 1
Choose any four-digit number e.g. 2345. The digits can be any digits from 0 to 9. The only rule is they can’t all be the same digit i.e. 5555 is not allowed, but 5551 is allowed. So the only rule is the four digits must be made up of at least two unique digits.
Step 2
Order the digits of your chosen number in descending order.
So 2345 becomes 5432 (ref: Number 1)
Step 3
Order the digits of your chosen number in ascending order.
So 2345 becomes 2345 (ref: Number 2) Note in this example the number was already in ascending order but your chosen number may not be and so you should order it (e.g. 4751 would become 1457)
Step 4
Subtract Number 2 (from step 3) from Number 1 (from step 2) to give you Number 3
Formula
Number 3 = Number 1 – Number 2
So in my example.
Chosen number was 2345
Number 1 (ascending) was 5432
Number 2 (descending) was 2345
Number 3 = 5432 – 2345
Number 3 = 3087.
Using number 3 go back and repeat steps 2, 3 and 4.
Repeat these steps until you arrive at Number 3 = 6174
Your goal is use the above steps to arrive at number 6174 and you have to count the number of iterations it takes you to get to the end result of 6174.
Can you find the four-digit number that takes the least number of steps to arrive at the 6174 end number?
Post your number and the iterations taken here if you fancy playing along.
I’ll kick this off with 1972 as my starting number and this needs 10 steps to arrive at 6174.
Click hare to see my steps
| Chosen # | # 1 | # 2 | # 3 | Step |
|---|---|---|---|---|
| 1972 | 9721 | 1279 | 8442 | 1 |
| 8442 | 8442 | 2448 | 5994 | 2 |
| 5994 | 9954 | 4599 | 5355 | 3 |
| 5355 | 5553 | 3555 | 1998 | 4 |
| 1998 | 9981 | 1899 | 8082 | 5 |
| 8082 | 8802 | 0288 | 8514 | 6 |
| 8514 | 8514 | 1458 | 7056 | 7 |
| 7056 | 7650 | 0567 | 7083 | 8 |
| 7083 | 8730 | 0378 | 8352 | 9 |
| 8352 | 8532 | 2358 | 6174 | 10 |
Thank you and have fun !!
Namaste|
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