Why is a river so rich ?

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 make the below equation true by using any three numbers from "1, 3, 5, 7, 9, 11, 13 and 15"?

( ) + ( ) + ( ) = 30

You need to move three matchsticks to form three squares. Can you do it?

I cannot talk, but I always reply when spoken to. What am I?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

People make me, save me, change me, raise me. What am I?

Find the Odd One Out?
84129
32418
47632
36119
67626
72927

Rectify the following equality 101 - 102 = 1 by moving just one digit.

You enter your friend's room. He is not in his room. Although you see that on the bed there are two dogs, five cats, two giraffes and three pigs. Also, a couple of chickens and ducks are flying in the room.

Calculate the number of legs standing on the floor.