Teams must each pick two different colors for their uniforms, from among 12 recognized colors. The 8 teams in the league each pick two colors, without consulting the other teams (and without regard to aesthetics!). If they chose at random, what is the probability that no two teams will have chosen the same pair of colors?

answer:

2/3 is the probability

Step-by-step explanation of:

I hope this is the answer

If it's wrong sorry

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.