Question

Probability http://prntscr.com/5hsuto

Answer 1

Where are you stuck at ?

Answer 2

second

Answer 3

I'm not sure if repetition is allowed. Question doesn't say anything

Answer 4

three `different` digits
so clearly repitition is not allowed for part b

Answer 5

u have 6 numbers ,how many number u can represent ?
how many numbers u can represent if it have different digits ?

Answer 6

note both cases ,u need 3 digits only

Answer 7

I don't get it. Let's start over again. I'm guessing my sample space to be 6P3. Is that correct?

Answer 8

total 3 digit numbers that can be formed from given set of numbers = 6x6x6 = 6^3

Answer 9

total 3 digit numbers without the digit 5 would be 5x5x5 = 5^3

take the ratio for part a

Answer 10

oh i see

Answer 11

Let me draw this So for each column I have to choose one out of the 6 number to put in. Right? For P(B)=(1/6)*(1/5)*(1/4)=1/120