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:
258 comments Page 4 of 26.
Some x said:
1 decade ago
Vijaya please don't confuse students with your typical explanation. Sunder's explanation is pretty simple when compared to yours. Don't make students to give up their effort in learning something by giving these type of difficult explanations.
Sidhu said:
1 decade ago
Pavithra. Thanks for your approach. Can u please say me why 1900 is used there (possibly some concept behind)?
Revathi said:
1 decade 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.
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