probability

[hazy canyon]

can u represent this with a tree diagram

or is there a better way

[cloud sleet]

just draw some overlapping boxes ig

[hazy canyon]

what to do after this

i guess within physics

there is a ratio of 2:1

[cloud sleet]

ur gonna want a more orderly drawing

[brazen sentinel]

hi

hmm

this question looks quite familiar

i forgot where i saw it i think its in a textbook

why dont u let the number of people not in either club be x

cuz usually u set something u dont know as x

@hazy canyon

[idle sigil]

so uh you written the eucid yet?

@hazy canyon

[brazen sentinel]

why dont we set something as x and y

that might be helpful

wait how bout we set the ppl in physics as x, ppl in math as y and ppl in both as z

idk what to do next tho shitt

bro im sry i cant help @hazy canyon

[hazy canyon]

np

any idea? @cloud sleet

[cloud sleet]

using boxes or bars will make this much easier, eg: (note: numbers are not the same)

[brazen sentinel]

yea thats a good idea

i was thinking of venn diagram but ive never seen that idea before tysm

wait so i guess u just add x + y + z

or like x + 2x

or something idk

[cloud sleet]

in the example, you know that x+2x = n/4, therefore 3x = N/4

[hazy canyon]

so then we need to find the number of students who are not in either clu

[cloud sleet]

so 6x = N/2

[hazy canyon]

ah

yh

[cloud sleet]

and the total students in either section is 6x+3x-x = 8x

since 6x=N/2, N=12x, the students in neither section is 12x-8x = 4x

anyways, you can probably get x in terms of N yourself and finish the example

[hazy canyon]

wait in this example when you say numbers are not the same

u mean u made up ur own right

[cloud sleet]

yes

you can follow nearly the same logic tho