Question

A box contains 4 red 5 blue and 6 green balls of identical size. two balls are drawn at random. the probability that one is blue and the other is green is?

Answer 1

for blue=     5/15=1/3       and for for green=       6/15        and total is=                           1/3+6/15=11/15 

Answer 2

Step-by-step explanation:

total 15 balls

two balls are drawn at random

15C2=15*14/2*1=105

one blue ball and other is green=6*5=30

therefore,

probability=30/105=6/21=2/7