I’m tall when I’m young, and I’m short when I’m old. What am I?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

Why is it very easy to weigh a fish?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

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?

The more it dries, the wetter it becomes. Can you tell what it is?

You walk into a room where there are three primates held in their respective cages:
1) A lion who is eating the flesh of a goat.
2) An orangutan who is playing with blocks.
3) A donkey who is sitting idle.

Who is the most intelligent primate in the room?

Identify the 10 differences between the two given pictures.

You are confined in a room and given two metal rods. Out of these two rods, one is magnet and the other is the iron rod. They look starkly similar. You don't have any other metal object in the room.

How will you decide which one of those is magnet?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?