#I have problem on like combinations
summer foxBOT
unborn dune
<@&286206848099549185>
formal summit
first, try selecting 3 students from 8, like the question says, and go from there
primal oasis
first, try selecting 3 students from 8, like the question says, and go from ther...
@unborn dune
Please reply when you’re back
primal oasis
What have you tried?
unborn dune
I couldn't figure out how to do it
primal oasis
Lay down everything you know so far
primal oasis
I couldn't figure out how to do it
I see
primal oasis
first, try selecting 3 students from 8, like the question says, and go from ther...
Can you agree with this?
unborn dune
yeah
unborn dune
then I do factorials of other 3 students
primal oasis
Could you elaborate?
unborn dune
I have 3 at the beginning and then we have other 3 groups for each and then I get factorial of each of the 3 groups and I get 6 from each group
primal oasis
Are you referring to
picking another three people?
unborn dune
I don't know quite well what I am doing
so can you give me instructions
of how to doit?
primal oasis
so can you give me instructions
Sure
The solution is quite simple
You pick three people, and pick another three
Leave the rest 2 people alone
Give it a try
unborn dune
ok
so if I take 2 groups of three and I take factorial from each team
which is 6
and then multiply by 2
because it'ss 2 grop
primal oasis
so if I take 2 groups of three and I take factorial from each team
Wdym factorial?
unborn dune
Wdym factorial?
like number of possibilities
unborn dune
I mean you need to factorial in the end, but I don’t get the number of 6
factorial of 3 is 6 and that's why
primal oasis
Why do you need factorial of 3?
unborn dune
idk
primal oasis
True
Well
Don’t take it so difficult
Just pick 3 people and another 3
For example
You pick ABC and DEF
That’s half away from the answer
Next, consider picking ABC first and then picking DEF is equivalent to picking DEF first and then ABC
So, divide what you got by 2
This is all you need
unborn dune
what those ( mean?
primal oasis
yes
I wrote that in factorial form
Because when there are 3 teams, 4 teams, or above
You divide them by n!
unborn dune
why do we divide by 2?
primal oasis
Next, consider picking ABC first and then picking DEF is equivalent to picking D...
👍
unborn dune
and what would be in the numenator?
unborn dune
(8/3(5/3?
formal summit
OP should focus on learning combinatorics basics
unborn dune
OP should focus on learning combinatorics basics
yes yes
is that answer?
answer should be number
primal oasis
answer should be number
You are supposed to do the rest
unborn dune
I don't get what you wrote
primal oasis
Which part
unborn dune
when we take 3 people and another 3 people
what you mean by that?
two take 2 groups
?
or what?
primal oasis
first, try selecting 3 students from 8, like the question says, and go from ther...
You said you agree with this tho
unborn dune
hey
@primal oasis
I learnt basics
and now what you wrote makes sense
but it's not quite understandable of what you did
I was thinking that I would pick one 3 out of 8 and would get 336 and then 3 out of 5 and get 60 and 2 out of 2 and get 2 and add those 3
together
but it's not in the answers