Twenty children are waiting for their grandfathers in the kindergarten courtyard. Any two children have a common grandfather. Prove that one of the grandfathers has at least 14 grandchildren in this kindergarten.
Having solved the complaint at the PSE lounge, you leave the lounge and see a door you haven't noticed before. The door has a large sign. At the top it has a rhyme:
Rotations are red
Or are they blue?
One or the other
The choice, it is two
Are there no ends to rhymes in this place? ...
I couldn't help but panic. School resumes tomorrow, and we have a speed quiz on ____________. I've forgotten everything that had been discussed, and even after I've finished reviewing, I'm supposing that I won't be able to remember everything. I hate to be the pessimist, but I have failed thes...
It is a math riddle(rule finding). A friend of mine asked me whether I can find a rule for following operation * (He said that he doesn't know the answer)
==============================================
92 * 56 = 45
36 * 32 = 51
84 * 28 = 40
32 * 36 = 20
92 * 81 = 90
72 * 16 = 26
88 * 54 ...
Solve the cryptic clue.
Hidden finance equals to nothing (3, abbr.)
Notice the capitalization in your answer.
Make sure your capitalization is correct.
Given the following table:
I have already found the first 4 digits: $6\cdot 3 = 18, \ \ 6\cdot 2=12$ and therefore, the first 4 digits are $1812$. I cannot determine how to continue... Any help is appreciated.
You pick up a discarded newspaper, hoping to satiate your need for puzzles with a cryptic crossword. But as you turn to the page, you feel something is awry – perhaps some elision?
Across
3. $F_6,F_7,F_8$ mixed $13\times3$ down${}- \sqrt{12\text{ across}}$
16. $3$ squares joined${}- 4$ and hal...
I got the answer correct. It was mostly an intuitive guess though. The horizontal wave appears once on each row and the vertical line (y-axis looking thing) with no arrow head also appears once on each row. Which leaves one possible answer from my standpoint. What's your reasoning on this?
Sour...
The puzzle below, when filled out completely, is a valid minesweeper board.
Some of the mines and numbers have already been filled in.
Can you fill in what is missing and use the solved grid to find a hidden phrase?
In the past we have seen questions on Puzzling Meta about what to do when an OP hasn't accepted an answer and similar. However, these questions tend (just by their nature) to end up being answered with the shrug-of-the-shoulders response, "Not much we can do, I'm afraid..."
After all, as @Gareth...
The aim is to draw a single contiguous line from the upper left corner to the lower right corner. The line includes each number from 1 to 39 exactly once.
Attention here one should not play on words, the question is to understand literally, and there is of course at least one answer.
What is the difference between a bird?