Out of four images which one is the odd one out?

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

Before Mount Everest was discovered, what was the highest mountain in the world?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

What is wrong in the below Picture?

Count the number of triangles in the picture below: