You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

In a chess board, the queen piece can move horizontally, vertically and diagonally freely. The picture represents the same.Can you place 8 queens on the board in a manner that none of the queens can attack each other?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Solve the following series:
AZ, GT, MN, __, YB

What 5-letter word typed in all capital letters can be read the same upside down?

Can you make a six-letter word using the letters N, A and B ?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

What is black when you buy it, red when you use it, and gray when you throw it away?

A California farmer owns a beautiful pear tree. He supplies the fruit to a nearby grocery store. The store owner calls the farmer to see how much fruit is available for him to buy. The farmer knows the main trunk has 24 branches. Each branch has exactly 12 boughs and each bough has exactly 6 twigs. Since each twig bears one piece of fruit, how many plums will the farmer be able to deliver?

Can you fill the blank with the correct number?

6 30 870 756030 _____