The answer depends on over what period of time. A millisecond, a year, a decade and - if your watch or clock survives that long (though you won't) - a millennium?
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22 times. hour hand meets minute hand each hour. Example : they meet at about 1h6, 2h17,... ( it's not exactly). But the 11th hour, they don't meet any times. So in a round of hour hand, it meets minute hand only 11 times and 22 times in a day
12
Once
There are 30 minutes in half an hour, so: 30 x 552 = 16560
22