Cross the Bridge

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?




Similar Riddles

81 x 9 = 801. What must you do to make the this equation true?

Asked by Neha on 03 Oct 2021


What came first, the chicken or the egg?

Asked by Neha on 29 Dec 2025

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Asked by Neha on 16 Mar 2024


I know a nine-letter word having only one vowel.
Do you ?

Asked by Neha on 19 Jun 2023

Four children having five rocks each were playing a game in which they had to throw the rock at a particular solid area in the water. Child 1- Succeeded in throwing three rocks at a solid area but one of the rocks sunk. Child 3 - His aim was so bad that all rocks got sunk. Child 4- He was awesome and none of the rocks got sunk. Child 2 - Was the winner but was struck by a rock in the head and died. Who killed Child 2?

Asked by Neha on 21 Oct 2024

A pregnant woman is preparing to name her seventh child. Her children's names so far are Dominique, Regis, Michelle, Fawn, Sophie, and Lara. What will she name her next child -- Jessica, Katie, Abby or Tilly?

Asked by Neha on 29 Mar 2023


What kind of storm is always in a rush?

Asked by Neha on 16 Jan 2024

What has no start, end, or centre?

Asked by Neha on 02 Sep 2023

What seven-letter word has hundreds of letters in it?

Asked by Neha on 01 May 2022


In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Asked by Neha on 06 Jul 2025

Hot Articles

Amazing Facts

Word ladder puzzle

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