"U2" has a concert that starts in 17 minutes and they must all cross a bridge to get there. All four men begin on the same side of the bridge. You must help them across to the other side. It is night. There is one flashlight. A maximum of two people can cross at one time. Any party who crosses, either 1 or 2 people, must have the flashlight with them.

The flashlight must be walked back and forth, it cannot be thrown, etc.

Each band member walks at a different speed. A pair must walk together at the rate of the slower man's pace:

* Bono: - 1 minute to cross

* Edge: - 2 minutes to cross

* Adam: - 5 minutes to cross

* Larry: - 10 minutes to cross

For example: if Bono and Larry walk across first, 10 minutes have elapsed when they get to the other side of the bridge. If Larry then returns with the flashlight, a total of 20 minutes have passed and you have failed the mission.

Notes: There is no trick behind this. It is the simple movement of resources in the appropriate order. There are two known answers to this problem. This is based on a question that Microsoft gives to all prospective employees.

Note: Microsoft expects you to answer this question in under 5 minutes!

Answer:

* Bono: - 1 minute to cross

* Edge: - 2 minutes to cross

* Adam: - 5 minutes to cross

* Larry: - 10 minutes to cross

Bono and Edge Bono comes back ---(2+1)

Adam and Larry Edge comes back----(10+2)

Edge and Bono over---------------(2)

(2+1)+(10+2)+2= 17 mins

Microsoft, hire me because it took me less then 3 MIns to solve :)

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