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

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

Complete the given grid with valid words. You can only use the letters AAEEIIMMPPTT.

Hint: The grid reads the same across as down.

What number comes next in this sequence:
7 8 5 5 3 4 4 _

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

You see me once in June, twice in November, and not at all in May. What am I?

What can go up a chimney down, but can’t go down a chimney up?

Solve the counting riddle by identifying the number of triangles in the given picture.

In a family supper, a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one daughter-in-law, and one mother-in-law need to sit at a table.

There are only seven chairs available at the place. How many more chairs do they have to borrow so that everyone can sit down together for the suppers if everybody requires a separate chair?