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If 1 st January of a particular year (say x) is Monday then what will be the 1 st day of the year 100 years after (i.e year x + 100).

Correct Answer: Friday or Saturday

Explanation:

In a period of 100 years there are 23 or 24 leap (as for century year it might be or might not be a leap leap year, as 1900 was not a leap year)
Number of odd days in a period of 100 years is 100 + 23 or 100 + 24 or 123/124 odd days.
Number of odd days in 100 years is when 123/124 divided by 7, remainder is 4 or 5. So next century should start with Friday or Saturday.


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