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?

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

What is always in front of you but can’t be seen?

In the four images below, can you find the odd one out?

I am sure no one can have two things for dinner. what are they?

Can you count the number of lines in the below picture?