It's actually not correct (sorry Jacob). It happens every time 1 July falls on a Friday (obviously). This happened in 1949, 1955, 1960, 1966, 1977 and many other dates -- on average, about once every 7 years. The last time was in 2005.
Showing posts with label Puzzles. Show all posts
Showing posts with label Puzzles. Show all posts
Wednesday, May 4, 2011
Calendar Question
Earlier I posted a calendar question. I asked if I was right? Apparently not. Thanks Mr C for commenting and clearing it up.
Monday, May 2, 2011
Puzzle
Mr Golan asked the class to see if they could find the sum of the first 50 odd numbers. As everyone settled down to their addition, Julia ran to him and said, "The sum is 2,500." Mr Golan thought, "Lucky guess," and gave him the task of finding the sum of the first 75 odd numbers. Within 20 seconds, Julia was back with the correct answer of 5,625.
How did she do this?
How did she do this?
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