Answer: you don't multiply the letters, the letter means any number
EX: if there was an equasion like f x 43 276 the f would be 6 because 6x 43 =276 or 5 x 65 = x
Step-by-step explanation:
Answer:
Yes, the two events are independent because P(NF|PB)=P(NF).
Step-by-step explanation: