Jia has a bag with a purple marble, a white marble, and an orange marble. She pulls a marble from the bag and then puts it back 3 times.

PART A: How many possible outcomes are there for this experiment?
Part B: What is the probability of selecting exactly 2 white marbles?
PART C: What is the probability of selecting two orange marbles after selecting a purple marble?

A)The possible outcomes from this experiment are all three marbles,   the purple marble, the white marble , and the orange marble.   Another possible outcome can be the same one three times, Also two of the same marble and 1 of a marble.    

B)The probability of selecting exactly to marbles is 2:4

C)The probability of selecting two orange marbles after selecting a purple marble would be 3:6

2. angles qrt and qst both measures 156 degrees.

step-by-step explanation:  

we have been given a diagram of a circle and we are told that measure of arc qvt is 156 degrees.  

we can see from our given diagram that angle qrt and angle qst subtends to arc qvt.

since we know that angles subtended by the same arc at the circumference are always equal.

by angle subtended by same arc theorem, measure of angle qrt and angle qst will be equal to the measure of arc qvt.

therefore, angles qrt and qst both measures 156 degrees and 2nd statement is the correct choice.