Open The Safe
Ludwig Bump runs the bank in Mathsville.

You have to help him, though, because he has forgotten the combination number of the safe.

Fortunately, he does remember some things about the number which may help you to help him.

· The number has four digits (eg.1234 or 9876).
· All the digits are different.
· It begins and ends with an odd number and has two even numbers in the middle.
· 19 and 519 go into it exactly.

WHAT IS THE NUMBER WHICH WILL OPEN THE SAFE?

• 19= 1+9 =10
  519 - 51=5+1=6
  finally 1069
• 10 years agoHelpfull: Yes(0) No(1)
• 19*519=9861
  
  9861/19=519
  9861/519=19
  
• 10 years agoHelpfull: Yes(0) No(0)