Answer:
The length of the missing side can be calculated by the following steps;
Step-by-step explanation:
It's a conditional probability: (We know that the probability of getting 1 tail or 1 head is equal to 1/2)
Probability ( Tail AND Tail) = 1/2 x 1/2 = 1/4
The Answer is
D) 31
Because 9x+13,
9(2)+13,
18+13,
31