You can see three almost identical images below. Can you spot the odd one out from them?

I have Rs.50 and I spend it in the way as below.

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

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

There is a shop where written:
Buy 1 for $1
10 for $2
100 for $3
I needed 999 and still only paid $3. How could this be financially viable for the shop-keeper?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

Imagine a box with two cogwheels, one big with 24 teeth and one small with 8 teeth. The big one is firmly attached to the center of the box which means it does not turn or move while the small one rotates around the big one.

How many times do you think that the smaller wheel will turn compared to the box when it turns once around the big one?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.