pascal didn't invent all the ideas behind this triangle. he did what all mathematicians do, he built on knowledge from an earlier time and then pushed the boundaries of that knowledge to give us something even more interesting and, as is often the case with mathematics, more useful. combinatorial problems and puzzles test our ability to think through problems and logically come up with efficient ways to organize information. >> kits, cats, sacks, and wives, how many were going to st. ives? >> so what's the answer to this riddle? let's find somebody who might help us figure it out. so how do we make sense of the confusion caused by all these kids? well, i'm lucky to have here with me jenny quinn, who's a professor of interdisciplinary arts and sciences at the university of washington-tacoma. jenny, thanks for coming. >> thank you, dan. nice jar. >> well, here are these buttons, and as far as i'm concerned, one button per kid. and i happen to have their pictures here. >> okay. so what we have here are two sets of six things. >> six buttons, s

does pascal think his friend crossed the line?bit. >> i don't know one photographer on the planet who don't want to do this kind of picture. >> reporter: lawyers say the magazine can't be forced to reveal the name of the photographer, but if the police really want to find him -- they can. jeffrey kofman, abc news, paris. >> our t thanks to jeffrey tonight. >>> when we come back tonight, that bizarre attack at one of the nation's most popular zoos. a man mauled by a tiger, heroes rushing in to save him. how did they do it and how did he get inside the cage with a tiger? coming up next. but your erectile dysfunction - that could be a question of blood flow. cialis tadalafil for daily use helps you be ready anytime the moment's right. you can be more confident in your ability to be ready. and the same cialis is the only daily ed tablet approved to treat ed and symptoms of bph, like needing to go frequently or urgently. tell your doctor about all your medical conditions and medications, and ask if your heart is healthy enough for sexu

lily pascal was arrested in 2009, and the d.a. never filed charges. but she claims police forced her to give a sample -- a swabbed sample of her dna. the state argued that the swab is like a fingerprint, and not invasive in anyway. but one judge did not agree to that. >> it is information obtained by the state when it develops a dna profile versus when it collects a fingerprint. >> now when i am arrested leaving behind in the custody of the government the intimate details of my medical condition, my heritage. >> lawyers from both sides feel the case will ultimately go to the u.s. supreme court. >>> a few hours ago the incident with the pepper spray that made news, they do not plan to file criminal charges against uc davis police officers who doused students with pepper spray during an occupy protest last november. the yolo county district attorney's office says there was insufficient evidence to prove the use of force was illegal. a los angeles judge ruled today that california's ban on flaw graw is to remain in place. they say the law banning the pou

lily pascal was arrested in 2009, and the d.a. never filed charges. but she claims police forced her to give a sample -- a swabbed sample of her dna. the state argued that the swab is like a fingerprint, and not invasive in anyway. but one judge did not agree to that. >> it is information obtained by the state when it develops a dna profile versus when it collects a fingerprint. >> now when i am arrested leaving behind in the custody of the government the intimate details of my medical condition, my heritage. >> lawyers from both sides feel the case will ultimately go to the u.s. supreme court. >>> a few hours ago the incident with the pepper spray that made news, they do not plan to file criminal charges against uc davis police officers who doused students with pepper spray during an occupy protest last november. the yolo county district attorney's office says there was insufficient evidence to prove the use of force was illegal. a los angeles judge ruled today that california's ban on flaw graw is to remain in place. they say the law banning the pou

lily pascal was arrested in 2009, and the d.a. never filed charges.laims police forced her to give a sample -- a swabbed sample of her dna. the state argued that the swab is like a fingerprint, and not invasive in anyway. but one judge did not agree to that. >> it is information obtained by the state when it develops a dna profile versus when it collects a fingerprint. >> now when i am arrested leaving behind in the custody of the government the intimate details of my medical condition, my heritage. >> lawyers from both sides feel the case will ultimately go to the u.s. supreme court. >>> a few hours ago the incident with the pepper spray that made news, they do not plan to file criminal charges against uc davis police officers who doused students with pepper spray during an occupy protest last november. the yolo county district attorney's office says there was insufficient evidence to prove the use of force was illegal. a los angeles judge ruled today that california's ban on flaw graw is to remain in place. they say the law banning the pours feeding

russia's first believe as hours before their legal battle is due to resume mikhail czerny and that of pascal have done a deal on the world's top. clay injury so boss that a past pledge back in the ninety's twenty percent of his wanted a billion dollar compensation we saw makes nine percent of the world a living in music as structured and calm making the company's now was some eight in the halls a billion dollars business out is million a cause of our explores the rumors surrounding the settlement. with over one a billion dollars ups like why would anyone want to drop the case surely microchip more knew what he was getting then to call inside sources close to the to claim that michael chinoy will get some money from a league that it cost them the figure flying around this roughly two hundred fifty million dollars but why the subtle when you could get more than one hundred times that i was so this settlement comes after years of the scotchman's about it so why now that is the real question here so you claim that michael should know i was appalled by another prominent case and run and the just

there were no republicans and i worked for one when i was a teenager, pascal jones, the owner of the local radio station and gave me a job at age 14. i became a republican because what he believed rubbed off on me, the idea of individual liberties and individual responsibilities, i couldn't be square with what was behind me, but could look forward and drem the dreams and live them if i wanted to and i couldn't blame everybody else around me for my future. i had to accept responsibility for that. and i saw in him, a level of patriotism and pride in america, that i really, really believed in. and i thought, that's what it means to be a republican, and count me among them. so, as a teenager, and not very popular decision, that's when i became a republican. finally-- >> (applause) >> i can't show my favorite speeches from the convention, without including the at least one from my own speech. >> two questions, how one's rivals can now be united is quite simple. we have barack obama to thank. it was barack obama who said, you didn't build it. translation? it doesn't belong to you. you see,

we have seen them taking to the streets of benghazi with heavy weaponry in the pascaling for islamic and establishing this as they are anti-western. it is not clear if this was coordinating in think way, but from speaking to the eyewitness who was by the cons late yesterday, they said they were told to protest against this film. they said that they had no intention of turning it violent because they showed up in a peaceful demonstration. and libyan security forces were opening fire on them and that made them go back to get their weapons and engage in hours of intense serious clashes with the security forces. >> let's talk a little bit about the film, jomana, because you laid out attempted attacks on western interests there. and then there's this film, this, i think calling it a film is giving it too much credit, it is more like a home ahead video insulting to islam. was that just, i guess, the fuel to an already crackling fire? >> reporter: it does seem so. it does seem like some people were saying that maybe many libyans i spoke to last night said the people who went out to protest