00:01
Okay, so it says in a group of students, 24 study math, 30 study biology, 22 physics, eight study math only.
00:22
Oh, eight study math only.
00:24
Oh, it's given me that.
00:26
Okay.
00:29
14 study biology only.
00:34
So 14 biology only.
00:38
Okay, so we'll do math.
00:44
Biology and then we have physics and six study so six study biology and physics biology and physics so six study biology and physics so now it wants to know how many students were in the group and how many students study all three subjects.
01:39
So right here, 24 study math, 30 study biology.
01:46
So first of all, if 30 study biology, i'm going to do 30 minus 14 minus 6 minus 2.
01:55
So 30 minus 14 minus 6 minus 2 and that is 8...