John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

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?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?

In a competitive exam, each correct answer could win you 10 points and each wrong answer could lose you 5 points. You sat in the exam and answered all the 20 questions, which were given in the exam.
When you checked the result, you scored 125 marks on the test.

Can you calculate how many answers given by you were wrong?

Count the number of triangles in the below picture?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

Open a Laptop which is password protected. Hint for the password is given as below:

1 mobile 3 books 2 Boards 1 night 4 balls 2 lighters 1 ghost 1 hat 3 watches

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?