How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

Can you find the six hidden animals in the picture below?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

You need to pick one entry from pot A and one from pot B to have a perfect match. Can you do it?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

Using mathematical symbols like +, -, and x in order to make the equations correct. Replace # with the above-given symbols.

9 # 8 # 7 # 6 # 5 # 4 = 91

Can it be possible to build a house that has all its four walls facing towards the South?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

Alex is stranded on an island covered in forest.
One day, when the wind is blowing from the west, lightning strikes the west end of the island and sets fire to the forest. The fire is very violent, burning everything in its path, and without intervention the fire will burn the whole island, killing the man in the process.

There are cliffs around the island, so he cannot jump off.

How can the Alex survive the fire? (There are no buckets or any other means to put out the fire)

Complete the table series riddle by finding the number that can replace "??".