An urn contains red

MATHEMATICS · Single correct · CBSE · Mathematics · Probability · Probability

Problem

An urn contains

5

red,

4

blue and

3

green balls. Two balls are drawn successively without replacement. Calculate the probability that the two balls are of different colours. (a)

\dfrac{47}{72}

(b)

\dfrac{47}{66}

(c)

\dfrac{19}{66}

(d)

\dfrac{47}{132}