Question 1101553
A box contains five blue, three red and two white identical 
balls. If two balls are selected at random, one after the 
other with replacement from the box, find the probability that:


                (a)	the two balls are red;


{{{matrix(1,3,(3/10)(3/10),""="",9/100)}}}


		(b)	they are of the same colour;


{{{matrix(1,3,(5/10)(5/10)+(3/10)(3/10)+(2/10)(2/10),""="",19/50)}}}


		(c)          one is red and the other is white.

  		
{{{matrix(1,3,

(3/10)(2/10)+(2/10)(3/10),""="",3/25)}}}


Edwin</pre>