What number do you get when you multiply all of the numbers on a telephone's number pad?

What is the longest word in the dictionary?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

Take one out and scratch my head, I am now black but once was red. What am I?

In the four images below, can you find the odd one out?

Can you place six matchsticks in a manner that each of the matchsticks is in touch with the other five matchsticks?

There are two insects on a tile. Insect X is sitting on one side of the tile (point A) and Insect Y is sitting opposite on the other side of the tile (point B). Now both of them decide to change their position and thus X starts crawling to point B and Y starts crawling to point A. When they meet and pass each other in between, X takes 20 seconds to reach B and Y takes just 5 seconds to reach A.

Can you calculate the total time each of the insects took to change their positions?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

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

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?