Take away the whole and some still remain. What is it?

Six people park their car in an underground parking of a store. The store has six floors in all. Each one of them goes to a different floor. Simon stays in the lift for the longest. Sia gets out before Peter but after Tracy. The first one to get out is Harold. Debra leaves after Tracy who gets out on the third floor.

Can you find out who leaves the lift on which floor?

Can you replace the question mark with the correct letter?

6 + 6 + 6 = N
7 + 7 + 7 = E
8 + 8 + 8 = R
0 + 0 + 0 = ?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

Guess the hidden movie name?

What am I?

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?