Spot what is wrong here in below Picture?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

I am not a bull but I have horns.
I am not an ass but I have a pack saddle.
Wherever I go, I leave silver behind me.

Who am I?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

There are forty elephants and they have forty-fore heads. How can this be possible?

How can one talk without saying a single word?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

First, think of the colour of clouds. Next think the colour of snow. Last, think of the colour of the moon. Now, what do cows drink?