Sunday

April 20, 2014

April 20, 2014

Posted by **mmima** on Wednesday, October 7, 2009 at 6:45pm.

- maths -
**jim**, Wednesday, October 7, 2009 at 8:05pmI don't see a short-cut. Could this just be division practice?

I make it two such numbers of 24 possibilities, one of which is 4186, and the other is predictable from that because 8 mod 7 = 1, and the equation (1000a + 100b + 10c + d = 0 mod 7) works out to (6a + 2b + 3c + d = 0 mod 7). But I still don't quite understand the intent behind the question. Maybe I'm missing something.

**Related Questions**

MATH - Need Answer to the Following Please: Using the 9 digits, 1, 2, 3, 4, 5, ...

Math Help Please - Can you Please explain the answer that I received of 2469? It...

Math - Received answer to the following question from Jishka. (2469) Would you ...

Math - Using the 9 digits, 1, 2, 3, 4, 5, 6,7, 8 and 9 you can arrange four ...

Math Help Please - Would you please explain the steps you used to get the answer...

Math - Need Answer to the Following Please: Using the 9 digits, 1, 2, 3, 4, 5, ...

6 th grade Math - You can find the total number of different 4-digit numbers of ...

math - sophia is making raffle tickets for the schools give away drawing.she ...

math - Using the numbers 1 through 9 with no repeats, find a 9 number such that...

math - What mystery number has 8 digits; none of the digits are the same. It is ...