A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth, the other always lies and you don't know which is which.
What is the question you ask?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

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

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?

What four weights can be used to balance from 1 to 30 pounds?

who is silent in the parliament?

Which is the smallest number that you can write using all the vowels exactly once?

If 1+9+8=1, what is 2+8+9?