I assume you mean a digital clock and that it only displays hours and minutes, not seconds. I'll also assume it's set to standard AM/PM time, not 24 hour time, which would be a bit different.
The times that would display exactly three 1s are:
That's 17, and they would be displayed 2x per day each, so 34 minutes in total.
A 24 hour clock displays digits whose sum total equals the number of led's used to display them 94 times a day. A 12 hour clock displays them 108 times a day.
On an analog clock with a 12-hour face: 44 times. On a digital clock: zero. (No needles.)
5 times
Exactly 55 times
Exactly 24 times.
34
A 24 hour clock displays digits whose sum total equals the number of led's used to display them 94 times a day. A 12 hour clock displays them 108 times a day.
11
press the clock button three times. :)
It is unknown exactly where a clock comes from. The first clocks were called sundials and they have been used since ancient times.
i think its 17
A broken clock is correct twice a day. This is because a clock with hands that are stuck will still display the correct time at least twice a day when the hour and minute hands align with the correct time.
On an analog clock with a 12-hour face: 44 times. On a digital clock: zero. (No needles.)
5 times
Exactly three times
Exactly 305 times
Exactly 243 times