I noticed one of the words in the oxford dictionary is spelled incorrectly. What about you?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

What are the 50th, 63rd and 100th numbers in the sequence below?
4, 5, 8, 8, 9, 9, 12, 13, 13, 13, 17, 18, ...

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

Which number should replace the question mark?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

why number 8549176320 is one of a kind?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

A man dies of old age on his 25 birthday. How is this possible?

Can you quickly find which two matchstick figures are identical?