Ask Experts Questions for FREE Help !
Ask

How many 4 digits number formed of only odd digits are divisible by five

Asked Mar 18, 2010, 12:47 AM — 3 Answers
How many 4 digits number formed of only odd digits are divisible by five

Search this Thread
Share |
3 Answers
muskan12's Avatar
muskan12 Posts: 7, Reputation: 1
New Member
  
#2

Mar 18, 2010, 12:48 AM
How many 4 digits number formed of only odd digits are divisible by five
Helpful
mathwiz3502's Avatar
mathwiz3502 Posts: 121, Reputation: 8
Junior Member
  
#3

Mar 18, 2010, 01:47 AM
The same answer to how many 3 digit numbers consist of only odd digits.
Helpful
galactus's Avatar
galactus Posts: 2,272, Reputation: 1436
Ultra Member
  
#4

Mar 18, 2010, 06:13 AM
Assuming repetition is allowed and 0 is not used because it is not an odd digit.

There are 5 odd digits: 1,3,5,7,9

Then, there are 5 choices for the first digit, 5 for the second, 5 for the third. But, for a number to be divisible by 5 it must end in 0 or 5. Since 0 is not an odd digit, we use the 5 and there is one choice.

5*5*5*1
Helpful  (1)
Not your question? Ask your question View similar questions
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Add your answer here.

Remove Text Formatting
 

Undo
Redo
  
Decrease Size
Increase Size
Bold
Italic
Underline
Align Left
Align Center
Align Right
Ordered List
Unordered List
Decrease Indent
Increase Indent
Insert Email Link
Wrap [QUOTE] tags around selected text
Wrap [CODE] tags around selected text
Wrap [HTML] tags around selected text
Wrap [PHP] tags around selected text
Wrap [YOUTUBE] tags around selected text
Notification Type:



Check out some similar questions!

How to you recognize prime numbers of more than two digits? [ 2 Answers ]

Hello you guys. I am studying for the GRE... And I had found that I forgot most high school math. I remember that once sometime told me that there was a way to now if a more than two digit number was a prime, but I don't remember it. I have already researched about it in your post but can't find...

Sum of the digits [ 3 Answers ]

The sum of the digits of a two digit numberis 12.if the new number formed by reversing the digits is greater than the original number by18,find the original number

9 digit zip code imports as 0, not 9 digits [ 8 Answers ]

I am using MS Word and MS Excel 2003. From MS Word, I have done a MAIL MERGE, and some of the zip codes are 5 digit, while others are 9 digit, as in 12345-6789. After doing the mail merge, and previewing the letters, the 9 digit zip codes get imported as 0. Certainly the MS Word software should...

View more Mathematics questions Search