Why Aeroplane windows are round?

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

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside.
The man said, "Oh! I am really sorry, I thought this was my room."
He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man.
What made her suspicious of that man? He might have been genuinely mistaken.

Akbar called Birbal and asked him to draw a line on the floor. He asked Birbal to make that line smaller without erasing it. Birbal smiled and did it before Akbar could blink his eyes.

How did he managed to do it?

Solve the alphametic puzzle by replacing the alphabet with the number.

S T O R M +
S O L E S
=========
T O W E L
=========

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

What number comes next in this sequence:
7 8 5 5 3 4 4 _