What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

There is a box in which distinct numbered balls have been kept. You have to pick two balls randomly from the lot.

If someone is offering you a 2 to 1 odds that the numbers will be relatively prime, for example
If the balls you picked had the numbers 6 and 13, you lose $1.
If the balls you picked had the numbers 5 and 25, you win $2.

Will you accept that bet?

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

Can you find the largest Three-digit number whose sum is 14 and whose square is less than 5,00,000?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

There are two guys standing face to face in a room. On a wall, there is a clock. One of those is a prophet. He tells the other guy that he will be stabbed in the back in five minutes.

Shocked to hear that, the other guy stares at the clock. Just after the five minutes, he is stabbed on the back. Can you tell what happened?

Find the number of squares in the below-given picture.

Before the start of the car race, John and Jacob have the same amount of fuel in their car. With this fuel, John can drive for 4 hours while Jacob can drive five hours.
After a time they realize that the amount of fuel left in John's car is 1/4th of the fuel in Jacob's.

For how long they are racing?