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I can probably help you

can you post ?

oh your typing it. sry didnt see.

I think 40%

Very close to zero, give me a minute to get the exact answer

It is definitely not 40%. Much lower

can you tell me like how to get the answer

it would help me alot

probably. I totally forgot this subject.

So...try getting the probability of one correct answer. True or false. That is 50%

If you guess on a tru/false, thats 50 percent for each answer.

so you use that and 20 get your percentage
then subtract 2
I think...

To answer 18 correct he's have to be some kind of superhero

so it will be like .50*.50 ?

Dude this is really hard to think right now i'm totally stoned out of my mind

.50*.50 18 times ?

maybe its like .50 times 18

maybe its like
.5^18

OH NO NOW I REMEMBER

what you have to do it find the probability of him NOT getting 18. And subtract that from 100%

So in order to not get 18 correct he has to get three incorrect am i right?

yea

how do you find the probability of getting three incorrect?

? what does that have 2 wid anething ?

dude i don't know i'm just trying to help you maybe you could help me too

get alcohol pads probably

that actually sounds like a good idea actually has this worked for you in the past?

dude just like find the prob. of getting three wrong then subtract. its very easy

R u talkin bout my errors?