Since there are 2 black sixes and 2 black eights in a typical deck of 52 cards, the probability of choosing one of those 4 out of 52 is 4/52 or 1/13.
Answer: C
Step-by-step explanation: It’s C , I had the same question.
Answer:
If
and
, then 
Step-by-step explanation:
This is a problem that utilizes both substitution and the order of operations.

Answer:
the first one for sure.
Step-by-step explanation:
Do you have a photo of the diagram ?