00:00Indiana Jones was on a mission to find a golden statue in the Peruvian Amazon.
00:06He had been searching the jungle for over three days when he found the entrance to a cave.
00:12He followed down very long corridors, escaped a few traps, and finally arrived at a room filled with gold.
00:20He could see the golden statue and made a run for it.
00:24But uh-oh, there was a trap door on the floor!
00:27Indiana Jones fell into a dungeon that had nothing except for an empty bucket and three doors.
00:33The first door would lead him to a hungry mama bear and her cub.
00:37The second door would lead him to a six-foot wall of fire.
00:41The last door would lead him to a lake filled with crocodiles.
00:45Which door should Indiana Jones use to escape?
00:48Let's see, he should definitely pick the second door.
00:59If he tried the first door, the mama bear would probably attack him trying to protect her cub.
01:04And swimming in a lake with crocodiles is never a good idea.
01:09The best option would be to fill the bucket with lake water to fight off the wall of fire.
01:14It would take some work, but it's Indiana Jones.
01:17He can do anything!
01:20Back in England, Indiana Jones is resting in his office when another professor anxiously approaches him.
01:27The professor says Jones needs to exit the building as fast as he can because some bad guys are looking for him.
01:34The professor gives him a map of the building and says he has to enter every single room on the way out.
01:40But he can't let the students in the classrooms see him more than once.
01:44Take a look at the map the professor gave him.
01:47How can Indiana Jones follow the instructions precisely and get away safely?
02:00Let's see how this works.
02:02There are two important things to note here.
02:05First, his own office counts as room number one in the building.
02:09We know he has to exit in room 16.
02:13The first guess might be to follow a line from left to right moving from room 1 to 2, 3, 4, and so on.
02:21But if he chose this path, he wouldn't go through rooms 13, 14, and 15.
02:27Alternatively, he could exit room 1 to room 2, then go back to room 1.
02:34Since he's the only person inside his office, this doesn't break any of the rules.
02:39Then, he could follow the path down to rooms 5, 9, and 13, and zigzag all the way to the exit in room 16.
02:48This way, he wouldn't let anyone see him more than once.
02:52Way to go, Indy!
02:55Barbara entered a coffee shop excited to drink her daily cappuccino.
02:59But when she went to pay, she realized she had forgotten her wallet.
03:04The barista, instead of getting mad, suggested another way out.
03:08If Barbara could win his game, he would give her the cappuccino for free.
03:12Barbara agreed.
03:14OK, I'm going to tell you three facts about myself, and you have to figure out which one is false, the barista said.
03:22Here are the facts.
03:24I have seven brothers. I hate nirvana. I'm actually an artist.
03:29Can you help Barbara out? Which fact do you think is false?
03:39It's the second one.
03:41For starters, the barista is wearing a nirvana T-shirt, and his phone's lock screen is a picture of the band.
03:47He definitely likes nirvana.
03:50Hannah ran into three random women in the parking lot.
03:54She immediately noticed something was off and spotted that one of the ladies was actually a vampire.
04:00Take a look at the image. Can you guess who the vampire is?
04:06It's the third woman on the right.
04:09If you look closely, her teeth are pretty pointy.
04:13Plus, I'm almost sure that the red stain on her shirt isn't red paint, if you know what I mean.
04:19Susie was alone in her research lab, trying to build a time machine.
04:24She connected a red string here to a red string there.
04:29She was alone in her research lab, trying to build a time machine.
04:33She connected a red string here and a blue one right there.
04:37And boom! A time-bending portal opened up.
04:40She wasn't so sure where it would take her, but she decided to go through it anyway.
04:45Once she passed through the portal, she arrived in an empty field, where she found a talking bear.
04:52She asks him where she was and what year they were in.
04:55But the bear said he would only answer her question if she got his riddle correct.
05:00The riddle went like this.
05:02I turn polar bears white and I will make you cry.
05:06I make celebrities look stupid and normal people look like celebrities.
05:10I turn pancakes brown.
05:12If you squeeze me, I'll pop.
05:14If you look at me, you'll pop.
05:16What am I?
05:18It took her a while, but Susie got it right.
05:21Do you have any idea what she answered?
05:26She said time.
05:29Mia was a student at the Witches' Academy.
05:32She was specializing in ghost activity to protect humans from these spooky creatures.
05:38For one of her finals, she had to find a ghost inside the haunted barn just outside the school.
05:44The barn had a room filled with mirrors.
05:47And once she went inside, her internal clock started ticking.
05:52Take a look at the mirrors.
05:54They all reflect Mia's image, but the ghost is hiding inside one.
05:58Can you tell which one?
06:06Take a look at the third mirror.
06:08Mia is wearing her smartwatch, but her reflection in the mirror isn't.
06:12It's a ghost!
06:14Mia is wearing her smartwatch, but her reflection in the mirror isn't.
06:18Mia is wearing her smartwatch, but her reflection in the mirror isn't.
06:21This must be the ghost pretending to be her.
06:24Way to go, Mia, for busting yet another ghost!
06:29Belly was a straight-A student, and for a school assignment,
06:32she had to come up with a riddle so difficult, almost nobody would be able to solve it.
06:38She spent a week developing it, and on Monday, she shared it with her peers.
06:43She gathered 100 students and gave them a number between 1 and 100.
06:48Each student was instructed to go inside a classroom that had exactly 100 boxes,
06:53randomly numbered between 1 and 100.
06:56Inside each box, there was a slip of paper,
06:59also containing a random number between 1 and 100.
07:03The students needed to enter the classroom on their own
07:06and find the box that contained the slip of paper with their own number on it.
07:10But to do so, students were only allowed to open a maximum of 50 boxes.
07:15They were instructed to leave the room exactly as they found it,
07:19and they weren't allowed to communicate with any other student once they left the room.
07:24If all of the students were able to find their number on the slips of paper inside the boxes,
07:29they would each win a $100 prize.
07:32But if even one of them wasn't able to find their number,
07:36then none of them would win the prize.
07:38Can you figure out what's the best strategy for all of the students to find their numbers and win the prize?
07:52Belly's riddle sure isn't obvious, but let's check out how it could work.
07:56If each student searched for their numbers randomly,
07:59they would each have a 50% chance of finding the box with their number inside.
08:04This is so because there were 100 boxes and they were allowed to look inside 50 of them.
08:10However, the probability of all of them finding their own number following this random strategy is absurdly small.
08:17So, to increase their chances of collectively finding their numbers, they would need a better strategy.
08:23The students could use something called the loop strategy.
08:27Once entering the classroom, they should go directly towards the box that had their number on top of it.
08:32The number inside probably wouldn't be their number, but that's okay.
08:36They should check the number inside of the box and go look for the box with that same number on top of it.
08:42And so on and so forth.
08:44They should keep doing this until they find the slip with their number on it.
08:48This strategy guarantees that 31% of the time, all students will be able to find their number and win the prize.
08:55It's not a huge probability, but hey, blame it on Belly!
09:00That's it for today!
09:01So, hey, if you pacified your curiosity, then give the video a like and share it with your friends.
09:06Or if you want more, just click on these videos and stay on the Bright Side!
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