How can you make number one disappear by adding something to it?

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

What is it?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

When we see 2 but call 10?

Can you count the number of triangles in the picture below?

How can you make a TV, a bed, a dog, and a car liquid?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

Get total of 120 by using five zeros 0,0,0,0,0 and any one mathematical operator.
Do you ?

Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
The colour of each hat is purely random. They could all be green, blue, or any combination of green and blue.
They need to guess their own hat colour by writing it on a piece of paper, or they can write 'pass'.
They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
If at least one of them guesses correctly they win $10,000 each, but if anyone guesses incorrectly they all get nothing.
What is the best strategy?

You can see three almost identical images below. Can you spot the odd one out from them?