What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

A non-stop marathon is the shared favourite sport of three brothers.

*The oldest one is fat and short and trudges slowly on.
*The middle brother's tall and slim and keeps a steady pace.
*The youngest runs just like the wind, speeding through the race.

"He is young in years, we let him run!" the other two brothers explained, "'because though he is surely number one, he is second, in a way." Why is it?

Count the number of triangles in the picture below:

Name a key which is hardest to turn.

Replace the question mark in the picture below.

If Rajina's daughter is my daughter's mom, who am I to Rajina?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Can you solve the photo plexer logic ?

As easy as you can get into me, it is as hard to get out of me.

Do you know what I am?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?