Here we go...

"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.

Got it, but it took me 13 minutes to figure out. Still need to find solution 2.

Well, I got one. Can't figure out what the second is atm. The one solution seems most optimal as it combines the two highest numbers with the lowest possible return time:
Bono and Edge goes over, Edge comes back. Takes 4 mins. Total time lapsed; 4 mins.
Adam and Larry goes over, Bono comes back. Takes 11 mins. Total time lasped: 15 mins.
Bono and Edge goes over. Takes 2 mins. Total time lasp: 17 mins.

Solution 2 is kinda trivial. It's not really significantly different that Solution 1.

Ah, okay. I found solution 2. yeah, not much different. It's just a shuffle of 1 minute.

Not a fan of Bono's or U2. I'm kinda hoping they don't make it. :lmao:

running out of puzzles, slow down.

running out of puzzles, slow down.
:lol:

I've always been a big fan of really good mind puzzles.

:lol:

I've always been a big fan of really good mind puzzles.

The only really hard one I had written down and can find was the 12 weights one.

Here's some good ones: http://rinkworks.com/brainfood/discrete.shtml

http://www.scientificpsychic.com/mind/mind1.html

Solution: Get a cattle prod and speed Larry up a bit

Then order doesn't matter :)