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:
Son's age = 24 years
Man's age = 48 years
Step-by-step explanation:
Let's take the age of son as x
Man's age = 2x
Twelve years ago,
Son's age= x-12
Man's age= 2x-12
Man is three times as old as his son so,
Solving for x,
2x-12(1) = x-12(3)
2x-12 = 3x-36
2x-3x = -36+12
-x = - 24
x = 24
So if we substitute the values we get,
Son's age = 24 years
Man's age = 48 years
Hope you understand :)