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?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?