If the 1st day of a leap year is Saturday, then what day lies on 4th March in that year?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → Saturday
The weekday repeats every 7 days, so only the odd days, the days left over after whole weeks, move it forward. In a leap year February has 29 days, which is 4 weeks + 1 day.
January has 31 days, 3 odd days: 1st February is Saturday + 3 = Tuesday
February has 29 days, 1 odd day: 1st March is Tuesday + 1 = Wednesday
4th March is 3 days after 1st March: Wednesday + 3 = Saturday
Shortcut: Count the days from 1st January to 4th March at once.
4th March is day \(31+29+4=64\) of the year
It comes 63 days after 1st January, and \(63=9\times7\) is a whole number of weeks
So 4th March falls on the same weekday as 1st January, Saturday