There are 10 vehicles in a parking lot: 3 SUVs and 7 trucks.
What is the probability that of any 7 randomly chosen vehicles, exactly 1 is an SUV?
A. 0.142

B. 0.175

C. 0. 333

D. 0.428

Question

There are 10 vehicles in a parking lot: 3 SUVs and 7 trucks.
What is the probability that of any 7 randomly chosen vehicles, exactly 1 is an SUV?
A. 0.142

B. 0.175

C. 0. 333

D. 0.428

anonymous · Answer

@epoweritheta

epoweritheta · Answer

exactly 1 is SUV ;
3C1*7C6/10C7

epoweritheta · Answer

can u calculate this ??? do u understand y i have did this ??

anonymous · Answer

nopeee lol. I cant see what it says to multiply and divide

epoweritheta · Answer

do u know nCr ??

anonymous · Answer

idk. Like i cant see what you put there

epoweritheta · Answer

dont know about combinations ??

anonymous · Answer

I do but idk how to do those ones

anonymous · Answer

The first one 3C1. does that mean 3x1?

epoweritheta · Answer

nCr means n choose r okay ???

anonymous · Answer

i dont get it lml

epoweritheta · Answer

actually to solve this problem you have to know about "Permutations and Combinations " so you first read that and then you can solve any problem like this  ,unless you read that these p[roblems will not make sense to u .however the answer for this problem is 0.175

anonymous · Answer

thank you. ill try to study it and understand the subject more :d

anonymous · Answer

its alot difficult to just jump straight into like most people on here expect. Most of this stuff most Statistics teachers never taught us.