File cabinet: Each drawer in a 5 drawer file has 50 folders. (250) You are searching for some info that is in one of the folders, but you do not know which folder has the information.

1. What is the probability that the info is in the first drawer you choose?

Question

File cabinet: Each drawer in a 5 drawer file has 50 folders. (250) You are searching for some info that is in one of the folders, but you do not know which folder has the information. 

1. What is the probability that the info is in the first drawer you choose?

ammarah · Answer

@ganeshie8

ammarah · Answer

1/250?

ganeshie8 · Answer

try agian

ganeshie8 · Answer

keep in mind, question is asking u to find probability of choosing correct "drawer"

ganeshie8 · Answer

how many drawers are there in total ?

ammarah · Answer

5/250?

ammarah · Answer

I have another one What is the probability that the info is not in the first folder you choose? Would this be 1/250?

ammarah · Answer

@ganeshie8

ganeshie8 · Answer

1. What is the probability that the info is in the first drawer you choose?


total number of drawers = 5
number of drawers wid correct info = 1

ganeshie8 · Answer

so probability for choosing correct drawer = 1/5

ganeshie8 · Answer

thats the answer for ur first question

ganeshie8 · Answer

see if that makes sense

ganeshie8 · Answer

for the second question also, work in similar way :
find total number of folders
find number of folders without correct info

ammarah · Answer

@ganeshie8  4/50?

ammarah · Answer

and for this one what is the probabbility that the info is not in the first six folders you choose?

ganeshie8 · Answer

total number of folders =  250
number of folders without correct info = 249

so, probability that the info is not in the first folder you choose =  249/250

ganeshie8 · Answer

^^ thats for ur 2nd question okay ?

ammarah · Answer

244/250 for the third one?

ganeshie8 · Answer

nope

ganeshie8 · Answer

u r opening the folders 6 times :
u need to find the probability each time,
and multiply all of them

ganeshie8 · Answer

probability for info not containing in first folder :  249/250

ganeshie8 · Answer

probability for info not containing in second folder :  248/249

ganeshie8 · Answer

probability for info not containing in third folder :  247/248

ammarah · Answer

oh till 244

ganeshie8 · Answer

yess

ganeshie8 · Answer

everything cancels out, and the answer wud be 244/250

so, you're right actually !!!

ganeshie8 · Answer

249/250 *  248/249 * 247/248 * 246/247 * 245/246 * 244/255

ganeshie8 · Answer

if u simplify that, u wud ge 244/250

ammarah · Answer

ok wait for other fractions on my hw i got a decimal for an answer is it wrong?

ganeshie8 · Answer

wat other fractions ?

ammarah · Answer

5/52 times 12/52 times 4/52
 i got a decimal