Announcements
#1
Hey, I'm stuck on this really simple question and I just can't work out what I'm doing wrong

A dance club has these members:
Child male: 5
Child female: 10

Two members are chosen at random. Find the probability that one of these members is a female child and the other is an adult male.

I've tried 16/25, 12/125, 1/10 but none of these is right... what should I be doing?

Thanks
0
4 months ago
#2
15/100
0
#3
(Original post by alevels2021)
15/100
It's not accepting that as the answer
0
4 months ago
#4
(Original post by sqrt123)
Hey, I'm stuck on this really simple question and I just can't work out what I'm doing wrong

A dance club has these members:
Child male: 5
Child female: 10

Two members are chosen at random. Find the probability that one of these members is a female child and the other is an adult male.

I've tried 16/25, 12/125, 1/10 but none of these is right... what should I be doing?

Thanks
1/10 is close. How did you get that?
0
#5
(Original post by RDKGames)
1/10 is close. How did you get that?
(10x6)/(24x25)
0
4 months ago
#6
(Original post by sqrt123)
(10x6)/(24x25)
And in words, do you know what this represents in terms of who you pick first and second?
0
#7
(Original post by RDKGames)
And in words, do you know what this represents in terms of who you pick first and second?
Ohhh it's the probability of picking female child then adult male, so I need to multiply it by 2 to find female child/adult male OR adult male/female child (either order) ? Which gives 1/5 which is the right answer! Thank you
1
X

new posts
Back
to top
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### University open days

• Sheffield Hallam University
Get into Teaching in South Yorkshire Undergraduate
Wed, 26 Feb '20
• The University of Law
Solicitor Series: Assessing Trainee Skills – LPC, GDL and MA Law - London Moorgate campus Postgraduate
Wed, 26 Feb '20
• University of East Anglia
Sat, 29 Feb '20

### Poll

Join the discussion

#### Do you get study leave?

Yes- I like it (182)
61.9%
Yes- I don't like it (12)
4.08%
No- I want it (78)
26.53%
No- I don't want it (22)
7.48%