Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

There is a hypothetical state between the USA and Mexico border 'Tango'.
Here 70 percent of the population have defective eyesight, 75 percent are hard of hearing, 80 percent have Nose trouble and 85 percent suffer from allergies, what percentage (at a minimum) suffer from all four ailments?

It belongs to you, but other people use it more than you do. What is it?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

Why Aeroplane windows are round?

Can you replace the question mark with the correct number?

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

What is it?

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

How can you take 2 from 5 and leave 4?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?