A bag contains only red and blue marbles. Yasmine takes one marble at random from the bag. The probability that she takes a red marble is 1 in 5. Yasmine returns the marble to the bag and adds five more red marbles to the bag. The probability that she takes one red marble at random is now 1 in 3. How many red marbles were originally in the bag?
x = y. Then x2 = xy. Subtract the same thing from both sides: x2 - y2 = xy - y2. Dividing by (x-y), obtain x + y = y. Since x = y, we see that 2 y = y. Thus 2 = 1, since we started with y nonzero. Subtracting 1 from both sides, 1 = 0.
I'm pretty sure that's not how math works So if I'm following this correctly, x=y Multiply both sides by x x^2=xy Subtract y^2 on both sides x^2-y^2=xy-y^2 Divide by (x-y) x-y=y so then the answer would be... x = 0, y ≠ 0
I needn't solve it, for there is nothing to solve there so let's see... So if we want the probably at first, it would be 1/5 at the lowest point, so x/5x then if we add 5, and it turns into 1/3, we can write it as (x+5)/(5x+5)=1/3 Multiply both sides by 3 (3x+15)/5x+5) = 1 Multiply both sides by 5x+5 3x+15=5x+5 2x=10 x=5 So then in the start there were 5 red marbles, and 20 blue ones That my friend, is a mystery for the ages. Not even I know the answer
Tell me the exact answer to the unsolved theory being; P vs. NP. Don't tell me what it is, I know about polynomial time and non-deterministic polynomial time, I need the answer ;) Figure that one out :D @Matt
My friend had an epiphany and changed his acc's name to MoreSex, and now it's lobby banned... is MoreSex an inapropriate name???
Well that depends on your definition of 'inappropriate'. However I can say with a reasonable amount of faith, that if you mention sex directly in your IGN, then yes, it is inappropriate
