If a clock strickes once at 1 o'clock, twice at 2o'clock, thrice at 3 o'clock and so on. How many times will it strikes in day?

A wall clock strikes the bell once at 1 o' clock, 2 times at 2 o' clock, 3 times at 3 o' clock and so on. How many times will it strike in a particular day. Find the standard deviation of the number of strikes the bell make a day.

A clock strikes once at 1 o'clock, twice at 2 o'clock and thrice at 3 o'clock, and so on. If it takes 8 seconds to strike at 5 o'clock, the time taken by it to strike at 10 o'clock is

If a clock strikes once at one O'clock twice at two O'clock ,thrice at 3 O'clock and so on , and again once at one O'clock and so on , then how many times will the bell be struck in the course of 2 days ?

A clock strikes once at 1backslash O' clock,twice at 2backslash O' clock,thrice at 3backslash O' clock and soon. What is the total number of strikings in a day (a) 136( b) 146 (c) 156 (d) 166

A clock buzzes 1 time at 1 O'clock, 2 times at 2 O'clock, 3 times at 3 O'clock and so on. What will be the total number of buzzes in a day ?

In 4 o' clock plant

Between 2 o'clock to 10 o'clock, how many times the hands of a clock are at right angle?