top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

How many times in 24 hours are the hands of a clock at right angles to one another?

0 votes
377 views
How many times in 24 hours are the hands of a clock at right angles to one another?
posted Mar 22, 2018 by anonymous

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

44


In a 12 hour period, the minute hand makes 12 revolutions while the hour hand makes one. If you switch to a rotating coordinate system in which the hour hand stands still, then the minute hand makes only 11 revolutions, and so it is at right angles with the hour hand 22 times. In a 24 hour day you get 2×22=44

answer Nov 9, 2019 by Hanifa Mammadov



Similar Puzzles
0 votes

A clock is set at 2 pm on 22 February 2022.
If the clock gains 2 minutes in 22 hours.
What will be the right time (to nearest minute) when the clock indicates 2 pm on 2 March 2022?

0 votes

On a regular 12-hour digital clock how many times would the same three digits in a row be displayed (e.g. 1:11,11:12,12:22) in one day?

0 votes

A clock was correct at midnight.

From that moment it began to lose two minutes per hour.

The clock stopped three hours ago showing 13:32.

The clock runs for less than 24 hours.

What is the correct time now?

0 votes

Dinesh was curious to know the angle between the hour and minute hands of a clock, so when he see10:10 in a clock he calculates the shorter angle between the hands.
Which time will also make the same angle between the hour and minute hand as calculated by Dinesh?

...