Mind Teasers : Crossing Bridge Brain Teaser (solved)
Crossing Bridge Brain Teaser
Difficulty Level
Popularity Quotient
Four friends need to cross a dangerous 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?
You might also like to try these :

A local magician is performing his favorite trick to be under water for approx 10 minutes. I went to the magician and told him that i can be under the water for 20 minutes. He ........

Number 8549176320 is so unique. Why ?

There are a hundred statements. 1st person says: At least one of the statements is incorrect. 2nd person says: At least two of the statements is incorrect. 3rd person says: At l........
 A Rebus Problem

The digits 09(0,1,2,3,4,5,6,7,8,9) can be rearranged into 3628800 distinct 10 digits numbers. How many of these numbers are prime ?

A man came back to his home after being away from her wife for a year. He surprised her by his visit and kissed her as she stood shocked. After that, he took this picture of hers t........

Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw. Can you crack the above text to get famous quote by albert einstein ?

Karamchand , A well known consulting detective is currently working on an international case where oil is illegally sold. While inspecting he finds a note under a shelf : 710 57........

How will you place six crosses on a Tic Tac Toe board without forming any threeinarow combination?

Removing one from eleven makes it ten and removing one from nine makes it ten. Is it even possible?
 maths grid puzzle for kids
 Count The Triangles Riddle