If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

In the picture given below, can you find out which digit will take place of the question mark?

Can you count the number of squares in the figure below?

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.

Solve the following series:
AZ, GT, MN, __, YB

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?

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

Replace the letters of words with a number so that the below equation holds true

BASE +
BALL
---------
GAMES
----------

A maths symbol is hidden in the below Bar Graph. Can you decipher it?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?