What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?
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 you replace the question mark with the correct number?
A man was going to bleach his socks because they had gotten muddy the day before. As he was pouring the bleach into the washing machine, he spilt some on the floor. He got some cleaning fluid and mopped it up with a rag. Minutes later he was dead. What killed him?
What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?
Find the hidden tiger in the given optical illusion ?
There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?
I have a clock(12-hour format) and both the needles of the clock overlap at 12:00.
After how much time, they will overlap again?
What building has the most stories?
The below mentioned letters have been placed in a order using a logic.
DEAD, BALL, FEAR, SHOP
Can you find the logic?
Solve this tricky question. You are trapped in a forest. With you, you have a gun preloaded with two bullets in it. In front of you, there is a tiger, a leopard and a jaguar.
How do you survive?
In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki