Train into a Tunnel

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?




Similar Riddles

Can you make four (4) nines (9) equal 100?

Asked by Neha on 16 Jul 2023


A Car driver was heading down a street in Washington. He went right past a stop sign without stopping, he turned left where there was a 'no left turn' sign and he went the wrong way on a one-way street. Then he went on the right side of the road past a cop car. Still, he didn't break any traffic laws. Why not?

Car Driver Going Wrong

Asked by Neha on 03 Mar 2021

A bridge is about to collapse. There are four people P, Q, R and S on one of the sides. Before the bridge collapses, they want to cross it. Now since the bridge is too weak, it can only stand the weight of two people at a time. Also, it is night time and nothing is visible. They have just one torch with them.

Now P takes one minute to cross the bridge, Q takes two minutes to cross, R takes five minutes to cross and S takes ten minutes to cross.

The bridge will collapse in seventeen minutes. How will they be able to cross the bridge before it collapses?

Asked by Neha on 01 Apr 2024


What is the difference between a jeweller and a jailer?

Asked by Neha on 11 Jul 2025

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

Asked by Neha on 27 Oct 2021

I’m tall when I’m young, and I’m short when I’m old. What am I?

Asked by Neha on 07 May 2022


I am quite hot but become too cold if you remove the first two letters. What am I?

Asked by Neha on 24 May 2023

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

Asked by Neha on 18 Jul 2024

Find the next number in the sequence

5 12 24 36 ?

Asked by Neha on 08 Jul 2023


I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King.

Who am I ?

Name the King

Asked by Neha on 10 Mar 2021

Hot Articles

Amazing Facts

Word ladder puzzle

The word ladder puzzle was invented by Lewis Carroll, author of Alice’s Adventures in Wonderland.