Question

Non-interesting probability problems x 6

Answer 1

That would be easy if you have that sense, but not for me :S

Answer 2

what sense?

Answer 3

and so many!!!

Answer 4

For 1and 2, i got the answer. For the rest, still can't work it out

Answer 5

just a few only... there are so many questions that I got wrong

Answer 6

#3 has grammatical errors.

Answer 7

Which year and the question number?

Answer 8

1991/II/32?

Answer 9

1992/II/33

Answer 10

^ Explain. Don't just give me the answer. That's not useful

Answer 11

Told you I am not useful :P

Answer 12

How many ways we can get a sum 5 in a roll of two dice?

Answer 13

(1,4),(4,1),(3,2)(2,3)

Answer 14

Now what about the 10?

Answer 15

(5,5)(6,4)(4,6)

Answer 16

Yes, so 7/36!

Answer 17

Oh... I see... I know what's wrong with my workings then, thanks

Answer 18

For 1992/II/33, I think the question is correct.

Answer 19

Yes you are right. My apologies :(

Answer 20

Get back your apologies, I don't need them.

Answer 21

Why ?

Answer 22

Hmmm...it's strange when people apologise to me...

Answer 23

Oh I thought you are being rude.

Answer 24

Hmm.. sorry...

Answer 25

For the apology problem I got 3/10 as answer.

Answer 26

Oh... Yes, I got that too... Sorry that I didn't mentioned

Answer 27

and for the last problem I am getting 3/5.

Answer 28

Yes, How did you get it?

Answer 29

For question 1991/II/32, D and E are the same answer... And I can't seem to get any of those either

Answer 30

For the last problem, you have 2/5*3/4 chances that you'll pick the rotten egg first, and 3/5*2/4 that you'll pick it on second, for a grand total of 12/20 , so 3/5

Answer 31

@m_charron2 1991/II/32 is not a problem now :)

Answer 32

For the last one, I got it now. Thanks :)

Answer 33

What about the first one? 2007/II/33

Answer 34

Dont' know if there's a quicker when than what I'm about to do, but here we go :
You have to pick sums of either 3, 6 or 9.
For 3 :
(1,2) and (2,1) = 2/(5*4)
For 6 :
(1,5), (2,4), (4,2) and (5,1) = 4/20
For 9 :
2/20
For a total of 2/5

Answer 35

o.o This is clear enough !!! Thanks :)

Answer 36

What did you get for 1991/II/32? I got 25/72 (or ((1/6)(5/6)^2)*3) but am not sure

Answer 37

there was a typing mistake there and you're right!

Answer 38

oh, ok, perfect

Answer 39

So, problems solved. Next one :)

Answer 40

Sorry, just now I discovered a problem.
For 2007/II/33,
The question stated that the cards are drawn at the same time. I assume that someone pick 2 cards at the same time. Then, the problem comes. Why is (5*4) the base?