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 2 of 7.
KIRUBAHARAMOORTHY said:
1 decade ago
100 years has 5 odd days. so the 101st year must only start with Friday, right? for example if a non leap year has 1 odd day, then it starts with the next day when you are comparing with the previous year. so I think the last day of the first Century must be 'Thursday' and second century is 'Tuesday' and so on.
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?
Sneha K said:
4 years ago
100 years = 24 leap years + 76 ordinary years.
= (24*2) +(76*1).
= 124 odd days.
= 124÷7.
=(17 weeks) +5odd days
= 5(Friday).
200 years =5*2=10
=1 week + 3odd days
=3(Wednesday).
300 years=5*3=15.
=2 weeks + 1 odd day.
=1 (Monday).
= (24*2) +(76*1).
= 124 odd days.
= 124÷7.
=(17 weeks) +5odd days
= 5(Friday).
200 years =5*2=10
=1 week + 3odd days
=3(Wednesday).
300 years=5*3=15.
=2 weeks + 1 odd day.
=1 (Monday).
(8)
Aravindha said:
1 decade ago
we check leap year with divisible by 4.. if it satisfies then we'll say it is leap year..
1996/4= remainder is 0 . there fore 1994 is a leap year.
but this concept doesnt use for centuries.. eg:1200,1600,2000 etc
centuries shuld divisible by 400 but not 4.
1996/4= remainder is 0 . there fore 1994 is a leap year.
but this concept doesnt use for centuries.. eg:1200,1600,2000 etc
centuries shuld divisible by 400 but not 4.
Raja said:
7 months ago
Every century has this one
100 = 5odd days=>friday.
200 = 3odd days=>wednesday.
300 = 1odd days=>monday.
400 = 0 odd days=>sunday.
Remainig=>(tuesday,thusday,saturday)=>tuesday only is their so correct answer is Tuesday.
100 = 5odd days=>friday.
200 = 3odd days=>wednesday.
300 = 1odd days=>monday.
400 = 0 odd days=>sunday.
Remainig=>(tuesday,thusday,saturday)=>tuesday only is their so correct answer is Tuesday.
Raja said:
7 months ago
Every century has this one
100 = 5odd days=>friday.
200 = 3odd days=>wednesday.
300 = 1odd days=>monday.
400 = 0 odd days=>sunday.
Remainig=>(tuesday,thusday,saturday)=>tuesday only is their so correct answer is Tuesday.
100 = 5odd days=>friday.
200 = 3odd days=>wednesday.
300 = 1odd days=>monday.
400 = 0 odd days=>sunday.
Remainig=>(tuesday,thusday,saturday)=>tuesday only is their so correct answer is Tuesday.
(2)
Saii said:
8 years ago
Not every year which is divisible by 4 is a leap year.
An end of a century i.e..100,200,300,400,1100,1200. Has to be divisible by 400 to be a leap year.
So, from the above, Only 400, 1200 are leap years.
An end of a century i.e..100,200,300,400,1100,1200. Has to be divisible by 400 to be a leap year.
So, from the above, Only 400, 1200 are leap years.
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.
Kavya said:
1 decade ago
keep it as a key point frnds
1.the 1st day of a century must be monday or tuesday or thursday or saturday
2.the last day of a century cannot be a tuesday or saturday or thursday
1.the 1st day of a century must be monday or tuesday or thursday or saturday
2.the last day of a century cannot be a tuesday or saturday or thursday
Vivek said:
9 years ago
Because 100 is not divisible by 400. If Every century year is divisible by 400 it means it is not leap year if it can't divisible by 400 it is a leap year.
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