The centre of the third figure is empty. What digit should fit inside?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

Can you find the thief by just looking at the picture below?

An octopus has 8 legs. A hippogriff has 6 legs and 2 pairs of wings. A sphinx has 6 legs and one pair of wings. Now we have all 3 kinds and a total of 18 insects in a cage. We have a total of 118 legs and 20 pairs of wings. How many insects do we have of each kind?

What does this mathematical rebus means ?

Write the next letter in this sequence.
O, T, T, F, F, S, S, E, __
**Hint: It is a Number Series Puzzle

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

A man is shown a portrait painting. He looks closely, then tells, “Brothers and sisters have I none, but that man’s father is my father’s son!” Who is the man in the portrait?