I have an apple tree , number of apple in this tree get doubles every week.

On 30th week , the tree gets completely filled with apples :-)



Can you tell me , on what week does my tree is half covered with apples ?

Where do fish keep their money?

Find the number of squares in the below picture

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

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?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?