Question
If 1st January 2017 was a Thursday, then what day of the
week was it on 31st March of that year?Solution
No. of days from 2 jan 2017 to 31 mar 2017 = 30 + 28 + 31 = 89 as 2017 is a non- leap year Since, it was Thursday on 1 jan 2017, every 7th days from 1 jan 2017 will be Thursday   Thus no. of odd days = 89/7 = 5 Now, 1 jan 2017 (Thursday) + 5 odd days = 31 mar 2017 (Tuesday) So, 31 march 2017 will be Tuesday
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