You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

Why do you find that most of the buildings are deprived of the 13th floor?

Decode below rebus
D
N
A
T
S , D

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

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

Which tank will fill first?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?