Mileage
Moderator: Michael Wallace
- Ian Volante
- Postmaster General
- Posts: 3967
- Joined: Wed Sep 03, 2008 8:15 pm
- Location: Edinburgh
- Contact:
Mileage
While driving northwards last night, I noticed my milometer click over to a palindromic total. 11 miles later, it was again palindromic. After driving a further 17 miles, it won't now be palindromic again for 9,993 miles. How many miles has my car covered?
meles meles meles meles meles meles meles meles meles meles meles meles meles meles meles meles
-
- Post-apocalypse
- Posts: 13317
- Joined: Mon Jan 21, 2008 10:37 pm
Re: Mileage
If it had travelled 199991 miles, then after another 11 it would be on 200002 (also palindromic). Then after another 17 miles, it would be on 200019, but you didn't specify that this number had to be palindromic. Another 9993 miles later and it will be 210012. So the answer is 200019.
- Graeme Cole
- Series 65 Champion
- Posts: 2042
- Joined: Tue Jul 06, 2010 9:59 pm
Re: Mileage
Don't you mean 1,083?Ian Volante wrote:After driving a further 17 miles, it won't now be palindromic again for 9,993 miles.
- Graeme Cole
- Series 65 Champion
- Posts: 2042
- Joined: Tue Jul 06, 2010 9:59 pm
Re: Mileage
I had 100018, but I was counting 099990 as palindromic.Gavin Chipper wrote:If it had travelled 199991 miles, then after another 11 it would be on 200002 (also palindromic). Then after another 17 miles, it would be on 200019, but you didn't specify that this number had to be palindromic. Another 9993 miles later and it will be 210012. So the answer is 200019.
- Ian Volante
- Postmaster General
- Posts: 3967
- Joined: Wed Sep 03, 2008 8:15 pm
- Location: Edinburgh
- Contact:
Re: Mileage
Well done Mr Chipper. You are correct. Want to buy a car?
Graeme, counting leading zeroes would just have been perverse
Graeme, counting leading zeroes would just have been perverse
meles meles meles meles meles meles meles meles meles meles meles meles meles meles meles meles
-
- Post-apocalypse
- Posts: 13317
- Joined: Mon Jan 21, 2008 10:37 pm
Re: Mileage
Depends. How many miles has it done?Ian Volante wrote:Well done Mr Chipper. You are correct. Want to buy a car?
Graeme, counting leading zeroes would just have been perverse
Counting leading zeroes isn't that perverse given that milometers show them - particularly old ones!