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5 years, 6 months ago
5 years, 6 months ago
Before solving this we should be aware of Odd days concept. Odd days are the days more than complete weeks
Odd days:
0: Sunday; 1: Monday; 2: Tuesday ; 3: Wednesday; 4: Thursday ;
5: Friday; 6: Saturday
The number of odd days in 400/800/1200/1600/2000 years are 0.
Hence, the number of odd days in the first 1600 years is 0.
Number of odd days in 300 years = 1
Number of odd days in 49 years = (12 x 2 + 37 x 1) = 61 days = 5 odd days
Total number of odd days in 1949 years = 1 + 5 = 6 odd days
Now look at the year 1950
January 26 = 26 days = 3 weeks + 5 days = 5 odd days
Total number of odd days = 6 + 5 = 11 => 4 odd days
Hence, Thursday.
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