Brain Teasers
Marbles, Coin and Die
Fun: (2.32)
Difficulty: (1.38)
Puzzle ID: #33644
Submitted By: DaleGriffin Corrected By: DaleGriffin
Submitted By: DaleGriffin Corrected By: DaleGriffin
Probability
Probability puzzles require you to weigh all the possibilities and pick the most likely outcome.Probability
If I have:
a normal coin with a heads and tails;
a 6-sided die;
and a bag containing 4 blue and 2 red marbles,
what is the probability of me flipping a heads, rolling a 4, and picking out a red marble?
a normal coin with a heads and tails;
a 6-sided die;
and a bag containing 4 blue and 2 red marbles,
what is the probability of me flipping a heads, rolling a 4, and picking out a red marble?
Answer
Probability of flipping a heads: 1/2Probability of rolling a 4: 1/6
Probability of selecting a red marble: 2/6
Then multiply the results, so:
1/2 x 1/6 x 2/6= 1/36 or 0.027 to 3 decimal places
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Comments
very good
cool.
toooooooooooooooooot
hello
tiz 2 ard
4 my lil brain
hello
tiz 2 ard
4 my lil brain
You should probably also write the answer in terms of reduced fractions (aka 1/2*1/6*1/3 == 1/36)
Where's the tease?
Yeah.. definitely should write it out as 1/36. And rounded it's .028....
The answer is easily figured out, but why does everyone have to mention the answer in the comment section?
very easy one
I'm in 5th grade, so I dont really know how to do this. Fun anyway.
I liked the teaser, but actually the odds of meeting the required conditions are anywhere from 0 to 100%.
The teaser says nothing about only rolling/flipping/selecting everything once, so it really just comes down to how long you keep at it.
The teaser says nothing about only rolling/flipping/selecting everything once, so it really just comes down to how long you keep at it.
I also think that you should right it as a fraction (1/2*1/3*1/6=1/36)
Very Easy
easy for me, the mathwiz of all time
Hm. This one came across to me as being a math problem, instead of a "brain teaser".
Not difficult at all, but fun for beginners I guess
Well, it can be viewed as a math problem, but aren't most math problems brain teasers?
alright but I did not get this
This is more like maths!!!
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