Mathematics, 15.12.2020 07:20 keke0529
In 1912, the U. S. government began issuing licenses to radio stations. Each station was given a unique three-letter call sign. Radio stations in the western United States were given call signs starting with K. Stations in the east were given call signs starting with W. For example, the radio station with the call sign ABC is KABC in California, and WABC in Georgia.
a. How many different three-letter call signs are there?
Hint: don’t worry about the K or W – just find the number of ways to arrange any 3 letters
b. How many different three-letter call signs are there where the first letter is a D?
Hint: again, the K and W don’t matter
c. In a random selection of radio station call signs, what is the probability of selecting a radio station with a call sign that starts with the letter D?
Answers: 3
Another question on Mathematics
Mathematics, 21.06.2019 13:00
Which of the following is the equation of a line that passes through the point (1,4) and is parallel to the x-axis a. y=1 b. y=4 c. x=1 d. x=4
Answers: 1
Mathematics, 21.06.2019 19:00
Atheater wants to build movable steps that they can use to go on and off the stage. they want the steps to have enough space inside so they can also be used to store props. how much space is inside the steps?
Answers: 1
Mathematics, 21.06.2019 20:00
How to find the exponential function y=ca^x, with points (1,2) and (2,1)
Answers: 2
Mathematics, 21.06.2019 20:30
List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6
Answers: 1
You know the right answer?
In 1912, the U. S. government began issuing licenses to radio stations. Each station was given a uni...
Questions
History, 16.11.2020 17:20
Mathematics, 16.11.2020 17:20
Engineering, 16.11.2020 17:20
Mathematics, 16.11.2020 17:20
Mathematics, 16.11.2020 17:20
Mathematics, 16.11.2020 17:20
