Clocks and Calendars
- My watch was 3 minutes slow at 5 pm on Tuesday and it was 5 minutes fast at 11 pm on Wednesday. When did it give correct time?
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We know that ,
Time from 5 pm Tuesday to 11 pm Wednesday = 30 hours
Clock gains 8 minutes in 30 hours∴ It gains 3 minutes in 30 x 3 hours = 11 hours 15 minutes. 8
Correct Option: A
We know that ,
Time from 5 pm Tuesday to 11 pm Wednesday = 30 hours
Clock gains 8 minutes in 30 hours∴ It gains 3 minutes in 30 x 3 hours = 11 hours 15 minutes. 8
∴ Correct time is 11 hours 15 minutes after 5 pm. = 4 : 15 am on Wednesday.
Thus , required correct time is 4 : 15 am on Wednesday.
- In an ordinary year ‘March’ begin on the same day of the week:
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As we know that ,
In an ordinary year, February has no odd day.
∴ February and March begin on same day of the week.
Also we know that, November and March begin on same day of the week.Correct Option: A
As we know that ,
In an ordinary year, February has no odd day.
∴ February and March begin on same day of the week.
Also we know that, November and March begin on same day of the week.
Hence , required answer will be February and November .
- A girl was born on September 6, 1970 which happened to be a Sunday. Her birthday would have fallen again on Sunday in:
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As per the given above question ,we can say that
Odd number of days from September 6, 1970 to September 6, 1981 = 14 daysCorrect Option: C
As per the given above question ,we can say that
Odd number of days from September 6, 1970 to September 6, 1981 = 14 days
Hence, the Sunday will be on September 6, 1981.
- The calendar for the year 2002 is the same as for the year
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Count the number of odd days from the year 2002 onwards to get the sum equals to 0 odd day.
Correct Option: B
Count the number of odd days from the year 2002 onwards to get the sum equals to 0 odd day.
Years 2002 2003 2004 2005 2006 2007
Odd days 1 1 2 1 1 1
Sum = 7 odd days = 0 odd day
Calender for the year 2008 is the same as that for the year 2002.
- Today is Friday. After 62 days it will be ?
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Each day of the week is repeated after 7 days
∴ After 63 days, it would be Friday
So, After 62 days, it would be ThursdayCorrect Option: B
Each day of the week is repeated after 7 days
∴ After 63 days, it would be Friday
So, After 62 days, it would be Thursday