00:01
Okay, so i see that you need help with this question.
00:02
In a group of 200 students who study mathematics, it was found that 79 study physics, 101 chemistry, 82 study information technology, so that's it, 48 students study physics and chemistry, 36 study physics and it.
00:44
The number of students who study all three subjects is equal to the number studying chemistry and it only.
00:52
Okay, so all three equals the number of studying chem and it only, 40 students do not study any, 40 is none.
01:15
It wants you to draw a venn diagram, okay? so here's my venn diagram.
01:23
And so we're gonna do 200 minus 79 minus 101 minus 82.
01:35
And then i'm gonna add 48 plus 36, 200 minus 79 minus 101 minus 82.
02:00
So that is, oops, minus, minus.
02:09
So that's negative 62 plus 48 plus 36.
02:15
And then i'm going to get 22, but then i'm gonna divide that by two and that's gonna equal 11.
02:21
So i have physics, i have chemistry and i have it...