A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

I am a normal creature, but I have five hands. I can even have more but even then I will be considered normal.

Who am I?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Can you find the thief by just looking at the picture below?

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

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?

Can you find a pattern and the missing number in the series given below?

100, 155, 258,? , 584, 819.

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?