C and D.If I'm right,can u make me the brainliest answer?Thank You.
Answer:
7/9 = 42/n.
7n = 378,
n = 54.
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
Answer:
A=42
Step-by-step explanation:
A=(6)(7)=42
Answer:
There is a 2/3 probability that the other side is also black.
Step-by-step explanation:
Here let B1: Event of picking a card that has a black side
B2: Event of picking a card that has BOTH black side.
Now, by the CONDITIONAL PROBABILITY:

Now, as EXACTLY ONE CARD has both sides BLACK in three cards.
⇒ P (B1 ∩ B2) = 1 /3
Also, Out if total 6 sides of cards, 3 are BLACK from one side.
⇒ P (B1 ) = 3 /6 = 1/2
Putting these values in the formula, we get:

⇒ P (B2 / B1) = 2/3
Hence, there is a 2/3 probability that the other side is also black.