Find the likelihood as a function of the binomial proportion p for each of the following.
1. Flipping 2 out of 4 heads with a fair coin. Evaluate at p = 0.5, the value for a fair coin.
2. Rolling 2 out of 4 sixes with a fair die. Evaluate at p = 1/6, the value for a fair die.
3. Flipping 2 out of 12 heads with a fair coin.
4. Rolling 2 out of 12 sixes with a fair die.