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What was the day on 31st October 2008?
1. Friday
2. Tuesday
3. Wednesday
4. Thursday

1 Answer

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Best answer
Correct Answer - Option 1 : Friday
No. of Odd days Simple Year Leap Year
365 / 7 = 52 weeks + 1 odd day 366 / 7 = 52 weeks + 2 odd day

 

Years No. of odd days
100 years 5
200 years 3
300 years 1
400 years 0

 

Note Multiple of 400 years i.e. 800, 1200, 1600, 2000 have 0 odd days.

Calculating leap year: For Finding the number of leap (1 - 99) years, divide the number of years by 4 and the quotient will be the number of leap years.

Code for weekdays:

No. of odd days Day
0 Sunday
1 Monday
2 Tuesday
3 Wednesday
4 Thursday
5 Friday
6 Saturday


31st October 2008

2000 years + 7 years + (1st January 2008 - 31st October 2008)

2000 year + 1 leap year  + 6 ordinary year + 305 days

0 odd days + 2 odd days + 6 odd days + 4 odd days = 1 week + 5 days 

5 is the code for Friday

Hence, Friday is the correct answer.

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