Posted by **john** on Sunday, September 21, 2008 at 12:14pm.

can you replace the stars with figures

****

x 3

______

*****

the whole calculation uses each of the digits 0-9 once and once only

the 4 figure number contains three consecutive numbers which are not in order. the third digit is the sum of 2 of the consecutive numbers

the 1st,3rd,and 5th figure of the 5 digit number are three consecitive numbers but again they are not in order. the second and forth digits are also consecutive numbers

- maths -
**David Q**, Sunday, September 21, 2008 at 1:26pm
Here's the brute-force solution, which was produced using MS Excel in about half an hour - so probably not much use if you have show your working and use the clues to get to the answer. There are five solutions that use the digits 0-9 exactly once:

5694 x 3 = 17082

6189 x 3 = 20457

6918 x 3 = 20754

8169 x 3 = 24507

9168 x 3 = 27504

Of these, only the first has three consecutive digits in the four-digit number (4, 5 and 6), and the third digit (9) is the sum of the first two of these. The other conditions fit also. You don't need to look at any four-digit number less than 3333, since the product with 3 doesn't have five digits, so you've got 6666 numbers to check. Interesting that the other four solutions all have the same digits in various permutations.

## Answer This Question

## Related Questions

- Math - Using only the digits 2,3,5 and 7 complete the following problems below. ...
- math - 8th grade - use the numbers one to nine, each one only once. now multiply...
- maths - using the digits 1,3 and 5 only once write the greatest and least three-...
- Math - How many different three-digit numbers can be written using the digits 4...
- Math - How many 3 digit numbers can be made using the following digits only once...
- math - using digits 1-9 only once, multiply a 3 digit by a 2 digit number and ...
- math - using 3,4,5,6, =28 you have to use each number once Using addition once, ...
- math - sophia is making raffle tickets for the schools give away drawing.she ...
- Math - 1. JUGGLING NUMBERS From old newspapers cut out digits 0 to 9 and stick ...
- MATH - The sum of three whole numbers is 193. The smaller two are consecutive ...

More Related Questions