Two nickels are flipped and a number cube is rolled. How many total outcomes are there?

18

Step-by-step explanation:

Coin # 1 - 2 outcomes

Coin # 2 - 2 outcomes

Number cube - 6 outcomes

Total outcomes: 2 x 2 x 6 = 24

However, if "heads and tails" is considered the same as "tails and heads" (order doesn't matter):

Coins outcomes: 3

Cube outcomes: still 6

Total outcomes: 18