Aptitude - Calendar - Discussion
Discussion Forum : Calendar - General Questions (Q.No. 1)
1.
It was Sunday on Jan 1, 2006. What was the day of the week Jan 1, 2010?
Answer: Option
Explanation:
On 31st December, 2005 it was Saturday.
Number of odd days from the year 2006 to the year 2009 = (1 + 1 + 2 + 1) = 5 days.
On 31st December 2009, it was Thursday.
Thus, on 1st Jan, 2010 it is Friday.
Discussion:
260 comments Page 8 of 26.
Sidhu said:
2 decades ago
Pavithra. Thanks for your approach. Can u please say me why 1900 is used there (possibly some concept behind)?
Revathi said:
2 decades ago
Hi pavithra, tell me if they asked for the year with below 1900. Because the value will be gone to minus so what to do?
Vallinath said:
1 decade ago
Pavithra you said sat code 7 or 0 when we use 7 and when we use 0 please tell me.
Faiza said:
1 decade ago
1 ordinary year = 365days = 52weeks + 1day
so, each ordinary year has 1 odd day.
1 leap year = 366 days = 52 weeks + 2 days (since 52 weeks=364days so, in leap year , to get 366 days we add 2 in 364)
so, each leap year has 2 odd days
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.
so, each ordinary year has 1 odd day.
1 leap year = 366 days = 52 weeks + 2 days (since 52 weeks=364days so, in leap year , to get 366 days we add 2 in 364)
so, each leap year has 2 odd days
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.
Aparna said:
1 decade ago
Pavithra very wrong method. How can you calculate 16th july 1776 ?
Sonakshi said:
1 decade ago
Yes Arpana Pavithra's formula is somewhere wrong.
Sasi said:
1 decade ago
Nice sundar.
Gowthami.s said:
1 decade ago
We want what day is jan 1,2010 for that
2000+9+jan1;
0+(9/4)+1
=(2+7)+1(2=leap year,7=non leap year)
=(2*2+7*1)+1
=4+7+1=12/7=5 odd days
= Friday
2000+9+jan1;
0+(9/4)+1
=(2+7)+1(2=leap year,7=non leap year)
=(2*2+7*1)+1
=4+7+1=12/7=5 odd days
= Friday
Pranay goud said:
1 decade ago
Thanks pavithra and sundar.
Priya said:
1 decade ago
I would like to know , how many leap years are there in 99 years and 100 years.
i.e How to calculate number of leap years from 'n' number of years ?
I too want to know the same.
i.e How to calculate number of leap years from 'n' number of years ?
I too want to know the same.
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