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Not 17

These are dependent events (not replacing the first tile). Probability of getting a red tile first could be 3 out of 5; when you don't replace it, there are only four tiles left, probability of getting a blue tile is 1 out of 4. 3/5 x 1/4 = 3/20. Could also be the opposite (3/4 x 1/5). Could also be any equivalent fractions, so possibilities are endless. That second sentence is confusing. Should just say "She did not replace the first tile," unless the teacher is cruel.

dolph, where is your child in school? I know this is a sixth grade SOL.
Also, I hate teaching Probability (and fractions in general).

In response to this post by MP4VT2004

Posted: 04/26/2018 at 7:45PM

Fifth grader, real question from school, what does the second sentence mean -- dolph 04/26/2018 3:07PM

Ceramic? ** -- Major Kong 04/26/2018 5:03PM

We know there was one red tile, 3 blue tiles, and 17 non-blue tiles. -- MP4VT2004 04/26/2018 4:38PM

Not 17 -- MPT20 04/26/2018 7:45PM

Honors math. Chester Virginia ** -- dolph 04/26/2018 7:53PM

^^^explains a lot^^^ -- 48zip 04/27/2018 10:32AM

You take a red tile out, you put a blue tile in and ya shake it all about ** -- RaleighHokie15 04/26/2018 4:33PM

Reading it again, I’m not even sure what class this is for -- HokieAl 04/26/2018 3:58PM

My guess is it came from 'Sunshine Math' ... -- vt90 04/26/2018 4:01PM

Certainly not Scholastic Rock ** -- TomTurkey 04/26/2018 4:02PM

Gotta be stats, but who teaches that in 5th grade? ** -- CochraneResident 04/26/2018 3:59PM

I got whiffs of probability from about 2nd grade. ** -- jmanatVT 04/26/2018 4:14PM

Probably gas ** -- TomTurkey 04/26/2018 5:57PM

I think I understand the point, but way too complicated for 5th grade. -- CochraneResident 04/26/2018 3:57PM

It means not ALL of our teachers are underpaid... ** -- King Jaffe Joffer 04/26/2018 3:49PM

There may have been some red tiles and some blue tiles ** -- Nzane4vtNnc 04/26/2018 3:46PM

There may have also been some M&M's, maybe a button or two -- Tafkam Hokie 04/26/2018 5:27PM

Probably may have been ** -- TomTurkey 04/26/2018 4:01PM

I don't know, but there has to be a ceiling. ** -- Guy LeDouche 04/26/2018 3:44PM

2nd sentence, they must have meant did not replace the first tile -- 81_Hokie 04/26/2018 3:36PM

Or multiples. ** -- 48zip 04/26/2018 5:18PM

@HokieDan95 knows - he's the one that talked to the installers. ** -- Hokie360 04/26/2018 3:27PM

It was as if the knowledge of the universe had been laid bare before me ** -- HokieDan95 04/27/2018 09:42AM

My first thought was “reptiles”. ** -- Old Village Hokie 04/26/2018 3:20PM

What a horribly written question -- HokieAl 04/26/2018 3:14PM

It gets more confusing and less solvable in each read ** -- TomTurkey 04/26/2018 3:21PM

It just said "probability" of red followed by blue -- TomTurkey 04/26/2018 3:20PM

Plus it never says how many tiles are in the bag to start ** -- coshokie 04/26/2018 4:18PM

Or what colors of tiles are in the bag. ** -- Hokie5150 04/26/2018 5:21PM

Bag was made from unicorn skin -- TomTurkey 04/26/2018 5:59PM

Left out "before and"? -- TomTurkey 04/26/2018 3:09PM

Assuming it means she doesn't put drawn tiles back in the bag. ** -- vt90 04/26/2018 3:09PM

Not 17

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