BrainDen.com - Brain Teasers
• 0

# 10 digit number

## Question

Can you find a ten digit where the 1st digit equals the number of zeroes, 2nd digit equals number of 1's, third digit equals number of 2's and so on...

## Recommended Posts

• 0

I'm guessing that there are several solutions to this!?

Here's mine:

6210001000

There are six 0's two 1's and one 2!

I shouldn't have been so cocky before as I've had to edit this twice already

• 0

9,000,000,000

##### Share on other sites
• 0
9,000,000,000

Wrong and getting wronger!

Yes there are nine 0's, yes there are zero 8's 7's 6's 5's 4's 3's 2's & 1's but oh wait, there is one 9! Denied!!!

##### Share on other sites
• 0

Doh!! Now that I sit and think about it, I really don't think it's possible. I could be wrong tho!

##### Share on other sites
• 0

It is possible!

I've gotten it wrong twice now and had to go back up and corect it but my first post here now is definately correct

##### Share on other sites
• 0

Ahh I see. My brain just isn't working right today. Some reason I thought yours was wrong. Derrrr please kick me now!

##### Share on other sites
• 0
I'm guessing that there are several solutions to this!?

Here's mine:

6210001000

There are six 0's two 1's and one 2!

I shouldn't have been so cocky before as I've had to edit this twice already

Hey there, I think you still have this one wrong. Your puzzle states: "Can you find a ten digit where the 1st digit equals the number of zeroes, 2nd digit equals number of 1's, third digit equals number of 3's and so on.."

6210001000 does not meet this criteria. "third digit equals number of 3's" Your third digit is a one and so there should be one three in your answer. Or perhaps your question has a typo?

##### Share on other sites
• 0

Damn my dyslexia!

It must be a typo, otherwise the etc wouldn't make sence.

Sort it out Skale!!!

##### Share on other sites
• 0

I started with all 0s too and arrived at the same solution..

Is that the only possible solution?

• 0

1000001007

##### Share on other sites
• 0
Damn my dyslexia!

It must be a typo, otherwise the etc wouldn't make sence.

Sort it out Skale!!!

my bad.. its a well-known puzzle elsewhere, the 1st digit is number of zero's, 2nd number of one's, 3rd number of two's and so on...

To extend it further, if we were to take the subspace of ten digits, (0,1,2,...9) and start with single digit (cause the only digit has to be number of zero's) no number will fit in. What if two digits are allowed, three and so on....

##### Share on other sites
• 0
1000001007

err.. wrong comperr..

1 in the first place means, there has to be just one 0 in the number

Here's a simple first check you should perform on any number you think might be the solution: Adding all the digits in the number should give you a sum of 10.

for eg, in nick's soulution 6210001000

6+2+1+1 is 10

R

##### Share on other sites
• 0

woops - wrong forum

I tend to have at least 30 tabs open (not an exageration)....sorry.

*goes to work on this problem now*

##### Share on other sites
• 0

I'm guessing that there are several solutions to this!?

Here's mine:

6210001000

There are six 0's two 1's and one 2!

Hey there, I think you still have this one wrong. Your puzzle states: "Can you find a ten digit where the 1st digit equals the number of zeroes, 2nd digit equals number of 1's, third digit equals number of 3's and so on.."

6210001000 does not meet this criteria. "third digit equals number of 3's" Your third digit is a one and so there should be one three in your answer. Or perhaps your question has a typo?

he said third digit = # of 2s nt 3s

##### Share on other sites
• 0

I'm guessing that there are several solutions to this!?

Here's mine:

6210001000

There are six 0's two 1's and one 2!

Hey there, I think you still have this one wrong. Your puzzle states: "Can you find a ten digit where the 1st digit equals the number of zeroes, 2nd digit equals number of 1's, third digit equals number of 3's and so on.."

6210001000 does not meet this criteria. "third digit equals number of 3's" Your third digit is a one and so there should be one three in your answer. Or perhaps your question has a typo?

he said third digit = # of 2s nt 3s

If you took the time to look at the post properly, you'd see that he editted the qustion AFTER I posted that!

##### Share on other sites
• 0

I have posted this puzzle (and 1 variation) as well - check 10-digit Number

• 0

## Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

×   Pasted as rich text.   Paste as plain text instead

Only 75 emoji are allowed.

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.