Posted by **kawal** on Friday, November 23, 2012 at 4:32pm.

Using digits 2, 3, 5, 6, 7 and 9, how many 3-digit numbers can be formed that are divisible by 5 such that the repetition of digits is not allowed?

- holy heart -
**mystify**, Friday, November 23, 2012 at 4:41pm
herpity derp. If a number is divisible by 5, it must have five or 0 in its ones digit. Thus, five must be in the ones. 6 can be in 1 of 4 places. So can 5 and 4 and 3 and 2. So, the answer is....

- holy heart -
**Reiny**, Friday, November 23, 2012 at 6:48pm
Your number must be in the form

xx5, where the x can only be from 2,3,6,7 or 9

number of 3 digit numbers which are divisible by 5 are

5x4x1 = 20

## Answer This Question

## Related Questions

- Math - Given the digits 1,2,5,7,8,9,0 and if repetition are not allowed, answer ...
- math - How many 4-digit numbers can be formed using the digits 1, 2, 3, 4, 5, 6...
- math - three digit numbers are to be formed from digits 0,1,2,3...9 if ...
- algebra - Consider making a four-digit I.D. number using the digits 3,5,8, and ...
- data management - from the digits 0,1,2,3,4,5,6,7,8,9 find the number of a) 4-...
- Data management - from the digits 0,1,2,3,4,5,6,7,8,9 find the number of a) 4-...
- math - Using the numbers 1 through 9 with no repeats, find a 9 number such that...
- College - Three(3) digit numbers can be formed from the digits 0,1,3,5,7 and 8. ...
- Math - How many different 2 digit numbers can be formed from the digits 1-6, if ...
- math - how many seven digit numbers can be formed with the digits 1,2,4,7 if NO ...

More Related Questions