Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Spot what is wrong here in below Picture?

Can you place three balls such that the equation shown in the picture holds true?

Can you divide the below-given shape into four equal and identical pieces?

What Time Should the last watch show in the below figure?

Which wheel of car does not rotate when you turn your car right?

How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?

On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.

Replace The Question Mark Below With the Correct Number.

2 {38} 3
4 {1524} 5
6 {3548} 7
8 {????} 9

What is the Surname of Barbie Doll?