a bag contains 3white and 4red balls.two draws of one ball each are made without replacement.what is the probability that one is red and other is white
Stacey Warren - Expert brainly.com
Hey! We 've verified this expert answer for you, click below to unlock the details :)
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga.
Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus.
Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Probability one is red of the first draw is 4/7
Probability one is white of the 2nd draw is 3/6 =1/2
multiply of both up, we get 4/7 * 1/2 = 4/14 = 2/7
Not the answer you are looking for? Search for more explanations.
4/7 is just for the probalility of one red only :)
do u want draw 2 balls, right ?
yes they used the formula like 2into4into3/7into 6
hmm. i dont understand that, actually the formula to get the probability of an event using : P(A) = number of event A / number all event
hmm well she is right the answer would be 4/7
why, can u explain more, nubber ?
we found the probability 2/7 when first red and second white
so P[RW] = 2/7
this is one case another possibility is that first is white and second is red
P[WR] = 3/7 * 4/6 = 2/7
so total probability of this event = p[WR]+p[RW]
wait, is draw it one by one Or 2 balls direct ?
hmm i think one by one...
hmmmm.. yeah, i see now. the question doesnt says the the first draw must red or white, thanks for your corrections @nubeer and sorry for @pooja123 :)
glad to help :)
thank u guys
im not becareful with this question :)
can u see my isosceles triangle solution for one sec