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

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

If 21x = 79x, what is the value of x?

When we see 2 but call 10?

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

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

why number 8549176320 is one of a kind?

What can jump higher than a building?

What Does this text mean:

important=important

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?