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

In the figure, you can see nine stars. What you have to do is connect all of them by using just four line and without lifting your hand i.e. in a continuous flow.

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

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

What has hands, but can’t clap?

What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?

You board a train. The train will have to enter a tunnel soon. You are claustrophobic. Which place is the best for you to sit?