Number of times the hands of a clock are in a straight line everyday is

At what time between $4: 30$ and $5$ will the hands of a clock be in a straight line?

$A$ clock strikes once for every half an hour and strikes a number of times equal to the hour at the beginning of every hour. What was the total number of strikes given by the clock from $8:00$ to $12:00$?

How often between $11$ $O$'clock and $12$ $O$'clock are the hands of a clock in integral number of $minutes$ apart (in $\times$)?

Between $1$ hour and $12$ hours,how many times will the hour hand and minute hand be together? (in times)

At what time between $5$ and $6$ o'clock are the hands of a clock $3$ minutes apart?