Do You See It?

It's a 7-letter word.
If we remove 1 letter from it, it remains the same.
If we remove 2 letters from it, it remains the same.
If we remove 3 letters from it, it remains the same.
If we remove all the letters from it, still it remains the same.
What is it?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

When I get multiplied by any number, the sum of the figures in the product is always me. What am I?

Can you guess the name of the month by looking the below rebus ?

What jumps when it walks and sits when it stands?

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

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

If Japan and Panama decided to merge into a single country, probably people will name it Japanama.

Can you think of two more such country's unions that could produce similar names like Japanama by overlapping their three letters?