Answer: 
Step-by-step explanation:





Answer:
d.5/6
Step-by-step explanation:
2/3÷4/5
2/3×5/4
5/6
Answer: Our required probability is 0.3162.
Step-by-step explanation:
Since we have given that
n = 60
Probability of success = 
Probability that at most 39 of these relays come from supplier A would be

Hence, our required probability is 0.3162.