### Brain Teasers

# Buttons, Buttons...

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

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?

### Answer

3/5You have to add the 27 black buttons to the three that Nicole already had.

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## Comments

Just like in seventh or sixth grade. ahh..good times, good times.

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!)

I'm actually in 6th grade. We just learned equivalent fractions.

I'm a little confused, could someone send me a message with how to do the equation for ratios?

Very fun!!

dang. that one was really easy. i knew how to do that. ha ha. too easy

very easy...

well tried all the same

well tried all the same

E-Z

P.S. don't forget to send me a message saying what subject you want me to make a quiz on!!!!

P.S. don't forget to send me a message saying what subject you want me to make a quiz on!!!!

too easy

Too Easy

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

Nice teaser. I enjoyed it.

Nice teaser. I enjoyed it.

nice teaser!!!

EASY!

I thought it was 27/50

I thought it was 30/53. Well, I was close!

WAY too easy. That is like 3rd grade math.

Too easy.

The teaser is just simple adding followed by VERY simple divisions.

The teaser is just simple adding followed by VERY simple divisions.

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?

I should have gotten that one! I went to fast, and didn't see the 3 extra black buttons!

Cute teaser!

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