A bag contains 4 red and 6 black balls

Asked by admin @ 13/08/2021 in Math viewed by 314 People

a bag contains 4 red and 6 black balls .a ball is drawn at random from the bag its colour is observed and this ball along with two additional balls of the same colour are returned to the bag if now a ball is drawn at random from the bag then the probability that this drawn ball is red is

Answered by admin @ 13/08/2021

(4/10)(6/12)+(6/10)(4/12)=2/5
hope u will understand

A bag contains 4 red balls and 5 black balls

Asked by admin @ 02/08/2021 in Math viewed by 336 persons

A bag contains 4 red and 5 black balls. Another bag contains 5 red, 3 black balls. If one ball is drawn at random from each bag. Then the probability …

A box contains 4 red balls and 6 black balls

Asked by admin @ 04/08/2021 in Math viewed by 363 persons

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Asked by admin @ 12/08/2021 in Math viewed by 289 persons

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Asked by admin @ 17/08/2021 in Math viewed by 331 persons

A bag contains 6 red balls some blue balls .if the prbablity of drawing a blue ball is twice the probability of drawing red balls find number of blue balls

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Asked by admin @ 17/08/2021 in Math viewed by 305 persons

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Asked by maham237 @ 23/07/2021 in Mathematics viewed by 299 persons

What fraction of the pencils are red write two equivalent fractions

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Asked by admin @ 10/08/2021 in Math viewed by 348 persons

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Asked by admin @ 20/08/2021 in Math viewed by 310 persons

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An urn contains 8 white balls and 4 red balls

Asked by admin @ 07/08/2021 in Math viewed by 453 persons

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A bag contains 6 black and 8 white balls

Asked by admin @ 11/08/2021 in Math viewed by 379 persons

A bag contains 6 black and 8 white balls one ball is drawn at random what is the probability that the ball drawn is white

A bag contains 3 red and 7 black balls

Asked by admin @ 17/08/2021 in Math viewed by 294 persons

A bag contains 3 red and 7 black balls. Two balls are selected at random with replacement. If second selected is given to be red, what is the probability that …

A bag contains white black and red balls only

Asked by admin @ 13/08/2021 in Math viewed by 302 persons

A bag contains white, black and red balls only. A ball is drawn at random from the bag. If the probability of getting a white ball is 3/10 and that …

A box contains 6 red balls 7 green balls

Asked by admin @ 13/08/2021 in Math viewed by 369 persons

A box contains 6 red balls, 7 green balls and 5 blue balls. each ball is of a different size. the probability that the red ball being selected is the …

An urn contains 7 white balls and 3 red balls

Asked by admin @ 06/08/2021 in Math viewed by 361 persons

an urn contains 7 white balls and 3 red balls. two balls are drawn together at random from this urn. compute probability that neither of them is white. hence compute …