What is both possible and impossible at the same time?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

They are three errirs in this question. Can you find them?

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

Can you place six X (crosses) in below board without making three in a row in any way ?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

Replace the question mark with the correct number below.

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

An apple seller is hosting a competition. He offers 1000 apples and 10 boxes to the people who pass by. The challenge is to put those 1000 apples in the 10 boxes in such a manner that if he asks for any amount of apples, the person can directly give him the boxes or a combination of boxes. If the person can do it, he promises to give a thousand apples for free.

If you happen to pass by the apple seller, will you be able to win a thousand apples?

What is the Surname of Barbie Doll?