Category Archives: Puzzles
In Chapter 7 of Lewis Carroll’s Alice Adventures in Wonderland, the Mad Hatter asked this unanswered riddle, “Why is a raven like a writing desk?” Several readers were perplexed (and I was one of them) and Carroll had continuously received letters requesting … Continue reading
It’s been quite a while isn’t it? In my last post, I said that I’d be gone for a week but it turned out to be almost four months. During the last few months, I had to deal with some … Continue reading
Can you arrange 15 billiard balls to form a “difference triangle” in the usual triangular configuration, that is, the arrangement that you would see before the start of a game of pool? The number 1 through 15 is arranged in … Continue reading
Only using digits 0 to 9 (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) once, can you form three numbers a, b and c so that the sixth power of c is equal to the sum of a and b?
At first, there were 15 leprechauns when the three pieces of the puzzle pieces were put together. However, after swapping the two smaller pieces, there are now only 14 leprechauns left. One of the leprechauns has vanished! So, how is … Continue reading
931 (in base 10) is an interesting number since in two other bases, it’s a repeating 3-digit number, namely, in base 11 and base 30. and Can you find the other three-digit numbers with this property?