Question:

There are 2 red balls and 4 yellow ones in a box.

a) if a ball is drawn and replaced,and a second ball is drawn,what is the probability that the first ball is red and the second ball is yellow?

b)What is the probability that the balls will be red and yellow combination in any order?

Attempt:

a) total no. of balls =6

2P1+4P1 =6

$\displaystyle \frac{6}{6} =1 $

b) 2C1+4C1=6

$\displaystyle \frac{6}{6} =1 $

Are my answers correct because I doubt it ?

thank you