JGBallard wrote:

Please help with this one...

A school gate needs the correct combinationof four digits in the correct order

When 5648 is tried 2 digits are wrong

When 3628 is tried 2 digits are wrong

When 3147 is tried 2 digits are wrong

When 5629 is tried 2 digits are wrong

When 1258 is tried all the digits are wrong

What is the correct combination of digits?

Thank you

1258 are all wrong so applying this,

*64* so 64 are correct

36** so 36 are correct

3*47 so 347...

*6*9.....69

Collecting in ORDER, 3,6,4, then 7 or 9? As two had to be wrong in 3*47, 7 is wrong leaves, 3649.

A version of VR codes.

Where did the question come from?