A bag contains coloured balls. A ball is taken at random from the bag, its colour is noted, and the ball is replaced.
A second ball is taken at random from the bag, its colour is noted, and the ball is
replaced.
The probability that the ball is red is 0.2.
First ball
Second ball
0.2
Red
Red
0.2
0.8
Not red
0.2
Red
0.8
Not red
0.8
Not red
Work out the probability that only one of the two balls taken is red.

(05.02)a farmer has decided to divide his land area in half in order to plant soy and corn. calculate the area of the entire area so he knows how much soil is needed. a parallelogram with a height of 6 yards and side length 9 yards. the height forms a triangle with the slanted side of the rhombus with a base of 2.5 yards. rhombus is split into a soy half and a corn half. each bag of soil covers 40 square yards. how many bags should the farmer purchase?