An express train takes 3 seconds to enter the tunnel which is 1 km long.
If it is travelling at 120 km an hour, how long will it take to pass completely through the tunnel?

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 next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

Replace the question mark with the correct number below.

What has 13 hearts but no other organs?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

Name a key which is hardest to turn.

I have branches, but no fruit, trunk or leaves. What am I?

Complete the table series riddle by finding the number that can replace "??".

What word begins and ends with an E, but has only one letter?