Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-5470-145
+91 7353221155
Use Coupon: CART20 and get 20% off on all online Study Material
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
OTP to be sent to Change
What day of the week was 20th June, 1837 A.D.?
Dear Sathyaram,
Today is Sunday,October 16,2011. So 2/10/2011 was Sunday. So 25/9/2011 was a Sunday. So 4/9/2011 was a sunday. 28/8/2011 was sunday. so 7/8/2011 was sunday. so 31/7/2011 and 3/7/2011 were sundays. so 26 june 2011 was sunday. so 20 June 2011 was Monday. from now on I will refer to February 29th of a leap year as leap day.
Consider dates dd/mm/yyyy and dd/mm/(yyyy-1). If there is no leap day between the two dates, and if dd/mm/yyyy was, say Monday, then dd/mm/(yyyy-1) was Sunday. This principle holds for any day of the week.
But, if there was a leap day during the two dates, dd/mm/(yyyy-1) would be Saturday. This principle also holds for any day of the week.
Between today and 20th june 1837 AD all years (EXCEPT 1900) yyyy,such that yyyy is divisible by four were leap years.
Please feel free to post as many doubts on our discussion forum as you can. If you find any question Difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We are all IITians and here to help you in your IIT JEE preparation.
All the best Sathyaram !!!
Regards,
Askiitians Experts
CHETAN MANDAYAM NAYAKAR
But the answer is tuesday.how?
Hi Sathyaram,
This is a logical question, where you should know the concept that,
A year divisible by 100 will be a leap year, only if it is also divisible by 400.
So consider the day of 20th June 1837 as Day X.
Between 20th June 1837 and 20th June 2011, we have 174 years.
At first, one will quickly say it has 174/4 = 43.50.
So 43 Leap years and 131 Non-Leap years.
But remember 1900 is not a leap year. So the correct way is 42 leap years and 132 Non-Leap years.
Now a Non-Leap year has 365 Days---- which is 52 weeks + 1 day.
And a Leasp year has 366 Days---- which is 52 weeks + 2 days.
So if 20th June 1837 was Day X, 20th June 2011 will be day X+(1*132)+(2*42) = X+216.
Note that every 7 Days the same day will occur again. So X+216 is X+7*30+6.
So same as (X+6)th day.
If you see, 20June 2011 is Monday. which is X+6.
So X should be Tuesday, and that was 20th June 1837.
Hope that helps.
Best Regards,
Ashwin (IIT Madras).
Thanks
Get your questions answered by the expert for free
You will get reply from our expert in sometime.
We will notify you when Our expert answers your question. To View your Question
Win Gift vouchers upto Rs 500/-
Register Yourself for a FREE Demo Class by Top IITians & Medical Experts Today !