What is the Surname of Barbie Doll?

In a concert, Christina is performing a dance show with her group.
At 10:00, she and her crew were dancing in an absolutely straight line. At that time Christina was standing in 4th position from both the front and back end of the row.

What was the size of her crew?

Below toothpicks/matchsticks indicate the group of fishes moving from west to east direction. Can you make them move from east to west by just moving three toothpicks/matchsticks?

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

Which number should replace the question mark?

If all Goats are Sheep and all Sheep are Deers, are all Deers Goats ?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

Why 1729 is a magic number? Answer Logically.

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?