Can you count the number of quadrilaterals in the picture below?

In the given picture, in how many ways can you read the word "Tiger"?

How can you tell a raw egg from a hard-boiled egg?

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

Jessica is telling her friends this story and asks them to guess if it’s the truth or a lie: “There was a man sitting in a house at night that had no lights on at all. There was no lamp, no candle, and no other source of light. Yet, he sat in the house and read his book happily.” Her friends say she’s lying, but Jessica corrects them and says she’s telling the truth. Jessica’s story is true—but how?

what does the below math rebus puzzle mean?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

After teaching his class all about Roman numerals (X = 10, IX=9 and so on) the teacher asked his class to draw a single continuous line and turn IX into 6. The teacher's only stipulation was that the pen could not be lifted from the paper until the line was complete.

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?