Recent content by Frank69

Sorry Gezeer, I meant what was written by rock.freak667 in the previous post. Thanks to all of you anyway :)

Thanks to everyone. Geezer, you say that dh is zero. I instead set it to 0.04 (I considered also the bases). And apparently I got the right result. My calculation was this: V(r,h) = πr2h. (∂V/∂r) = 2πrh (∂V/∂h) = πr² Then I plugged r = 4 and h = 12 in dV dV = (∂V/∂r)(4,12)dr +...

Homework Statement Use the differential to estimate the volume of tin a can of radius 4 cm., height 12 cm. and thickness 0.04 cm is made of.Homework Equations (differential) df = f'(x,y)dx + f'(x,y)dy The approximated volume should be 14cm^3. However, I need the procedure to get to the...

Oh yes, you are rite. Then there are 24 elements in (A and B), giving P(A and B) = 24/256 Therefore P(A|B) = P(A and B) / P(B) = (24/256) / (3/4) = 1/8 Thank you for the help guys

Trying to find A and B I got the following: A and B = { (134)(2)()(), (134)()(2)(), (134)()()(2), (2)(134)()(), ()(134)(2)(), ()(134)()(2), (2)()(134)(), ()(2)(134)(), ()()(134)(2), (2)()()(134), ()(2)()(134), ()()(2)(134) } Where () is a cell and 1,2,3,4 are the balls labeled...

I have problems computing this: P(A and B) how can I find the intersection of the events A and B in this case? we have studied this but for simpler event spaces (like a die toss etc). In this case it seems rather complicated. For example we could have B = { 1111, 1210, 1300, 2110, ... }...

Homework Statement 4 balls are placed successively into 4 cells, all 4^4 arrangements being equally probable. Given that the first 2 balls are in different cells (event B), what is the probability that one cell contains exactly 3 balls (event A)? Homework Equations P(A|B) = P(A...

Hello people. I m new to probability and now I have to give an exam at uni about it. One of the sample question is like this: Four cards are drawn from a pack of 52 well-shuffled cards. Find the probability that 3 are aces and 1 is a king.The way I see it, it should be like: A = {...