A pizza company makes pizza in three different sizes: small, medium, large. There are four possible toppings: pepperoni, sausage, green pepper, and mushroom. Show the sample space, and determine how many different kinds of pizza with one topping are available.

Sample space = {s1, s2, s3, s4, m1, m2, m3, m4, l1, l2, l3, l4, s1234, s123, s124, s12, s13, s14, s23, s24, s34, m1234, m123, m12, m13, m14, m23, m24, m34, l1234, l123, l12, l13, l14, l23, l24, l34}

total with one topping = 12

s - small

m - medium

l - large

1 - pepperoni

2 - sausage

3 - green pepper

4 - mushroom