Answer:
Required Probability=
Step-by-step explanation:
We have been given the total 40,000 words
And the words that started with letter T is 6,670
We need to find the probability of the words beginning with T
Words beginning with T will be 
Total words after choosing 20 unique words would be: 


Hence,
Required Probability=
Answer:
Answer is in the picture.
Answer:
X >= 7
Step-by-step explanation:
7x + 8 >= 57
7x >= 57-8
7x >= 49
x >= 49/7
x >= 7