Aptitude - Calendar - Discussion
Discussion Forum : Calendar - General Questions (Q.No. 9)
9.
The last day of a century cannot be
Answer: Option
Explanation:
100 years contain 5 odd days.
Last day of 1st century is Friday.
200 years contain (5 x 2) 
3 odd days.
Last day of 2nd century is Wednesday.
300 years contain (5 x 3) = 15 1 odd day.
Last day of 3rd century is Monday.
400 years contain 0 odd day.
Last day of 4th century is Sunday.
This cycle is repeated.
Last day of a century cannot be Tuesday or Thursday or Saturday.
Discussion:
61 comments Page 5 of 7.
Samantha said:
1 decade ago
The earth takes 365.24 days to take one revolution about sun. So after 4 year a correction of 1 day is taken for extra 0.98 day.
And to correct an error of 0.02 day 100th year is not taken as leap year. After a Century that error is a full day long, so we skip the leap year.
This is easy to understand when you realize the difference between 365.25 and 365.24 is 1/100 of a day per year. So after 100 years we have accumulated a full day of error.
And to correct an error of 0.02 day 100th year is not taken as leap year. After a Century that error is a full day long, so we skip the leap year.
This is easy to understand when you realize the difference between 365.25 and 365.24 is 1/100 of a day per year. So after 100 years we have accumulated a full day of error.
Nisha said:
1 decade ago
Leap year is any year divisible by four. How is hundred not a leap year!!!
Nuwan said:
1 decade ago
100 years = 76 ordinary years + 24 leap years.
= 76 multiply with its odd day i.e 1 + 24 multiply with its odd days i.e 2.
= 76 + 48.
= 124 odd days.
This means that every 100 years contain 124 odd days. But explanation has contained that there are 5 odd days.
can you explain is it OK?
= 76 multiply with its odd day i.e 1 + 24 multiply with its odd days i.e 2.
= 76 + 48.
= 124 odd days.
This means that every 100 years contain 124 odd days. But explanation has contained that there are 5 odd days.
can you explain is it OK?
PRABHUCHANDU said:
1 decade ago
Last days of century can be:
Monday -1.
Wednesday-3.
Friday-5.
Sunday-7.
First days of century can be:
Monday-1.
Tuesday-2.
Thursday-4.
Saturday-6.
Monday -1.
Wednesday-3.
Friday-5.
Sunday-7.
First days of century can be:
Monday-1.
Tuesday-2.
Thursday-4.
Saturday-6.
Riya said:
1 decade ago
100 is not a leap year why?
Please give solution Fast.
Please give solution Fast.
Amar24 said:
1 decade ago
Anyone explain what was the first day of century must be?
Gopal said:
1 decade ago
100 years has 5 odd days then.
Last day of 1st century will be?
Sunday monday tuesday wednesday thursday.
So last day will be thursday. It was given friday.
Can anyone help me.
Last day of 1st century will be?
Sunday monday tuesday wednesday thursday.
So last day will be thursday. It was given friday.
Can anyone help me.
Shubham said:
1 decade ago
We all know that every ordinary has both last and first day same
And in a leap year the last day is the next of first day,
So any one can explain that the first day cannot be Wednesday ?
100 - 5 odd days - friday
200 - 3 odd days - wednesday
300 - 1 odd day - monday
400 - 0 odd day - sunday
500 - 5 odd days - friday
600 - 3 odd days - wednesday
700 - 1 odd day - monday
800 - 0 odd day - sunday
And in a leap year the last day is the next of first day,
So any one can explain that the first day cannot be Wednesday ?
100 - 5 odd days - friday
200 - 3 odd days - wednesday
300 - 1 odd day - monday
400 - 0 odd day - sunday
500 - 5 odd days - friday
600 - 3 odd days - wednesday
700 - 1 odd day - monday
800 - 0 odd day - sunday
Mohit said:
1 decade ago
100 is not a leap year why?
Meena said:
1 decade ago
In 100years there is 24 leap years & 76 ordinary years
(100 is not a leap year )
from 101 to 200years there is 24 leap years & 76 ordinary years (200 is not a leap year)
from 201 to 300years there is 24 leap years & 76 ordinary years
(300 is not a leap year)
form 301 to 400years there is 25 leap years & 75 ordinary years
(400 is a leap year)
from 401 to 500years there is 24 leap years & 75 ordinary years
(500 is not a leap year)
so in 500 years there is 121 leap years and 379 ordinary years
121*2=242 & 379*1=379 Then 379+242=621
For calculate odd days divide 621 by 7,
(621/7)=Quotient 88 & Remainder 5
we have to take only the remainder for odd days
I think u understood
(100 is not a leap year )
from 101 to 200years there is 24 leap years & 76 ordinary years (200 is not a leap year)
from 201 to 300years there is 24 leap years & 76 ordinary years
(300 is not a leap year)
form 301 to 400years there is 25 leap years & 75 ordinary years
(400 is a leap year)
from 401 to 500years there is 24 leap years & 75 ordinary years
(500 is not a leap year)
so in 500 years there is 121 leap years and 379 ordinary years
121*2=242 & 379*1=379 Then 379+242=621
For calculate odd days divide 621 by 7,
(621/7)=Quotient 88 & Remainder 5
we have to take only the remainder for odd days
I think u understood
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