If 1st April of an ordinary, non-leap year falls on a Monday, then what will be the day of week on 1st September of that year?
Count the days from months between April 1 and September 1 like this: April days = 30;May days = 31;June days = 30;July days = 31;August days = 31; So total days = 153. Since 153 = 21 X 7 + 6, so excess days are 6. So we can count the day to Monday + 6 = Sunday..
Three comets appear in the sky at regular periods of 7, 14 and 21 years respectively. If a comet has passed just now, what is the minimum time that we must wait for a comet to appear in the sky?
Two watches, one of which gained at the rate of 1 min. and other lost at the rate of 1 min. daily, were set correctly at noon on the 1st January 1977. When did the watches indicate the same time?
Dec. 27, 1977 midnight
Dec. 26, 1977 noon
Dec. 25, 1977 noon
Dec, 27, 1977 noon
The first watch gains on the second watch 1 + 1, 2 minutes in a day.
The watches will indicate the same time when the one has gained 12 hours on the other. As 2 minutes is gained in 1 day
∴ 12 hours is gained in days = 1⁄2 x 12 x 60 = 360 days
Counting 360 days from 1st Jan. 1977, we get Dec. 27, 1977.
An event occurs at regular intervals of 30 minutes. The last event occured 23 minutes ago The next event is due at 09::30 AM. What is the time now?
How many degrees does a minute hand sweep in 50 minutes?
This Blog Post/Article "Clocks and Calendars Quiz Set 11" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Updated on 2017-05-17.