### Brain Teasers

# Missing Clock Digit

Mad Ade has several clocks which have appeared in several different teasers on this site. They are all kept in one room. When Mad Ade enters the room he notices something unusual about the times.

Clock 1 is at: 06:16

Clock 2 is at: 11:56

Clock 3 is at: 16:33

Unfortunately the last digit is missing of Clock 4, it says 12:1?.

What is the missing digit from clock 4?

Clock 1 is at: 06:16

Clock 2 is at: 11:56

Clock 3 is at: 16:33

Unfortunately the last digit is missing of Clock 4, it says 12:1?.

What is the missing digit from clock 4?

### Answer

The missing digit is 9 because all the digits of the other clocks add up to 13.Clock 1 is 0+6+1+6=13

Clock 2 is 1+1+5+6=13

Clock 3 is 1+6+3+3=13

therefore Clock 4 must be 1+2+1+9=13

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