Problem 1 · 2021 Math Kangaroo
Medium
Logic & Word Problems
careful-counting
Each year, the third Thursday in March is named Kangaroo Day. The dates of Kangaroo Day for the next few years are listed below, with one error. Which date is wrong?
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Answer: C — 14/3/2024
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Hint 1 of 2
Work out the actual third Thursday of March for each listed year.
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Hint 2 of 2
March 1's weekday shifts each year; find which printed date isn't really a third Thursday.
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Approach: check each date against the real third Thursday
- Find the weekday of March 1 for each year and locate that year's third Thursday.
- Four of the five printed dates land correctly on the third Thursday of March.
- Only 14/3/2024 is off — the third Thursday of March 2024 is the 21st, not the 14th.
- So the wrong date is (C).
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