River Crossing with one Torch

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

River Crossing with one Torch




Similar Riddles

What does the below image rebus riddle means ?

Rebus Riddle

Asked by Neha on 04 Sep 2021


Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

Asked by Neha on 23 Sep 2025

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Asked by Neha on 25 Jul 2025


Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

Asked by Neha on 24 Aug 2023

what one word does the below rebus identifies?

Read Picture Rebus

Asked by Neha on 15 May 2025

Which city is three-fifths chick two third cat and 50% goat?

Asked by Neha on 25 Jan 2024


John was piloting a plane behind a car but was never able to overtake it. Why?

Asked by Neha on 04 Dec 2023

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Asked by Neha on 07 May 2024

Use the digits from 1 up to 9 and make 100.

Follow the rules.
=> Each digit should be used only once.
=> You can only use addition.
=> For making a number, two single digits can be combined (for example, 4 and 2 can be combined to form 42 or 24)
=> A fraction can also be made by combining the two single digits (for example, 4 and 2 can be combined to form 4/2 or 2/4)

Question: how can we do this?

Asked by Neha on 13 Jun 2023


If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Asked by Neha on 25 Oct 2023

Hot Articles

Amazing Facts

Jigsaw puzzles

Jigsaw puzzles soared in popularity during the great depression, as they provided a cheap, long-lasting, recyclable form of entertainment.