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In the month of March 2019, find the days on which the date is a multiple of 5. (see the given page of the calender; 1st March 2019 was a Friday)

In the month of March 2019, find the days on which the date is a multiple of 5. (see the given page of the calender)

(In the calendar shown, 1st March 2019 falls on a Friday and the month has 31 days.)

1 answer

Answer: S = {Tuesday, Sunday, Friday, Wednesday, Monday, Saturday}, n(S) = 6

Dates that are multiples of 5: 5, 10, 15, 20, 25, 30.

Since 1st March is a Friday, 8th, 15th, 22nd, 29th are also Fridays. So:

  • 5 March – Tuesday
  • 10 March – Sunday
  • 15 March – Friday
  • 20 March – Wednesday
  • 25 March – Monday
  • 30 March – Saturday
Doubtly AI · 24 Oct 2026 AI-verified · Oct 2026 Report
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