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

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Can you count the number of squares in the given picture?

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

Chhote se Chintu Miyan,
Lambi si Pooch.
Jahan Jaye Chintu Miyan,
Wahan Jaye Pooch.

छोटे से चींटू मियाँ,
लंबी सी पूंछ।
जहाँ जाये चींटू मियाँ,
वहाँ जाये पूंछ।

Bolo kya?

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

Why did Buffon take the goal with him after every Juventus match?