If a bag has 4 red balls and 2 yellow balls, whatis the probability of getting a red ball.

A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball, find the number of blue balls in the bag.

A bag contains 10 white, 6 black and 4 red balls. Find the probability of getting : not a red ball

from a bag containing 4 red and 2 black balls, two balls are drawn. the probability of getting two black balls is:

A bag contains 10 white, 6 black and 4 red balls. Find the probability of getting : a black ball

A bag contains 10 white, 6 black and 4 red balls. Find the probability of getting : a white ball

An urn contains 7 red and 4 blue balls. Two balls are drawn at random with replacement. Find the probability of getting 2 red balls.

A bag has 4 red balls and 2 yellow balls. (The balls are identical in all respects other than colour). A ball is drawn from the bag without looking into the bag. What is probability of getting a red ball? Is it more or less than getting a yellow ball?

A bag contains 225 balck balls, 75 red balls and 25 white balls. A ball is drawn at random from the bag. Find the probability of getting a black ball.

An urn contains 6 red and 4 blue balls . Two bolls are drawn at random with replacement . Find the probability of getting 2 red balls (ii) 2 blue balls (iii) one red and one blue ball .