Braingle: 'Buttons, Buttons...' Brain Teaser

Buttons, Buttons...

Probability puzzles require you to weigh all the possibilities and pick the most likely outcome.

Puzzle ID:	#36645
Fun:	(2.17)
Difficulty:	(0.93)
Category:	Probability
Submitted By:	eagle_gurl

Nicole finds 27 buttons on the ground that are black. She adds them to her collection of 4 blue buttons, 3 black buttons, 13 white buttons, and 3 red buttons. What is the probability that Nicole will draw a black button out of the container that holds all of her buttons?

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Comments

flamingdragon May 16, 2007	Just like in seventh or sixth grade. ahh..good times, good times.
nerdyiscool May 16, 2007	that was like fifth for me. and good times? Not so much... I...strongly disliked fifth grade math. (Ppl I know irl will get this. Oh, joy!)
neptune9999 May 16, 2007	I'm actually in 6th grade. We just learned equivalent fractions.
kronichoney_420 May 16, 2007	I'm a little confused, could someone send me a message with how to do the equation for ratios?
tngurl May 18, 2007	Very fun!!
SummerBoysL0ve May 19, 2007	dang. that one was really easy. i knew how to do that. ha ha. too easy
jamesbond Jun 06, 2007	very easy... well tried all the same
flowergirl1219 Jun 27, 2007	E-Z P.S. don't forget to send me a message saying what subject you want me to make a quiz on!!!!
spinnercat Jul 24, 2007	too easy
rehtaeh Jul 28, 2007	Too Easy
eagle_gurl Aug 13, 2007	they dont all have to be hard you know....i used to come on here all the time when i was younger and get frustrated because i couldnt find any easy ones to do
974999gec Oct 26, 2007	Nice teaser. I enjoyed it.
974999gec Oct 26, 2007	Nice teaser. I enjoyed it.
Keiko Nov 05, 2007	nice teaser!!!
AndrewWalker Dec 12, 2007	EASY!
Holo Feb 07, 2008	I thought it was 27/50
brain23 Mar 07, 2008	I thought it was 30/53. Well, I was close!
jsdodgers Apr 03, 2008	WAY too easy. That is like 3rd grade math.
Quickq Aug 02, 2008	Too easy. The teaser is just simple adding followed by VERY simple divisions.
brain23 Oct 25, 2008	Well maybe like 4th grade math or so...and plus, they don't all have to be hard...this one was really easy for me. How did it involve division?
mathisnice Jan 17, 2010	I should have gotten that one! I went to fast, and didn't see the 3 extra black buttons!
Jayo Apr 27, 2011	Cute teaser!