In a certain group of 50 students at Hogwarts School of Wizardry, only 15 students are wearing caps and 30 students are wearing neckties. If 9 students are neither wearing a cap nor a necktie, how many students are wearing both a cap and a necktie? 3 4 5 6

In a certain group of 50 students at Hogwarts School of Wizardry, only 15 students are wearing caps and 30 students are wearing neckties. If 9 students are neither wearing a cap nor a necktie, how many students are wearing both a cap and a necktie? 3 4 5 6

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

See similar textbooks

Similar questions

The annual National No Spying Day is celebrated at KAOS headquarters this year. There are 11 Control agents and 19 KAOS agents attending. How many ways can we choose a team of 5 agents if 2 team members need to be from Control and 3 from KAOS? How many ways can we choose a team of 5 agents if at least 1 team member needs to be from Control?
Derek, Abdul, Bernard, and Suzie are playing hide-and-seek and taking turns being 'it'. In how many different orders could the children take their turns being 'it'? orders Submit
There is a 4-on-4 dodgeball game (8 players total). After the game, everyone shakes hands with everyone else once, including people on their team. 1. How many handshakes were there? 2. If it was a 5-on-5 dodgeball game, how many handshakes might there be? 3. How might you find out if there were 50 people on each team? Or 111? (You do not have to solve. Just explain or show how you would find it.)
The principal wants to have a teacher committee on non-semestering. There are 11 secondary teacher volunteers for the committee and 7 intermediate teacher volunteers. Question: How many ways can the principal form a committee of 5 if there must be AT LEAST 3 intermediate teachers on the committee?
In how many ways can you arrange 3 different english books, 4 different mathematics books and 3 different science books in a shelf if books of the same subject should go together? a. 36 b. 864 c. 108 d. 5184
The annual National No Spying Day is celebrated at KAOS headquarters this year. There are 11 Control agents and 14 KAOS agents attending. How many ways can we choose a team of 9 agents if 3 team members need to be from Control and 6 from KAOS? (Trivia note: the spying agencies are from Get Smart, a TV series from the late 1960's. I only watched it in reruns :-) --Dr. N.) How many ways can we choose a team of 9 agents if at least 1 team member needs to be from Control?
A large research project is looking for more researchers. There are 8 spots open on the research team. There are 10 mathematicians and 14 computer scientists that apply for the team. a. How many different ways can a team of 8 be made for the project? b. How many different ways can a team of 8 be made for the project if the team must contain at least one computer scientist and at least one mathematician.
A new-custom made sweater is made by choosing the color, the material, whether or not the sweater will have a crew or v-neck, and whether or not the sweater will have decorations. If there are 7 colors available and 3 types of materials, how many different sweaters are possible? 35
In deciding 2 courses, in how many ways can Brenda choose out from 6 programs? a. 6 b. 10 c. 15 d. 24
Los Angeles Dodgers. From the official website of the 2013 Los Angeles Dodgers major league baseball team, we found that there were ve active players on roster available to play outfield. Assuming that these five players could play any outfield position, how many possible assignments could manager Don Mattingly have made for the three outfield positions?
A student has 12 video games: 4 adventure games, 2 arcade games, 3 puzzle games, and 3 simulation games. How many ways can the games be positioned on a shelf if the games stay with their genre? O 5 971 968 000 O 3317 76 O 41 472 O 3 317 760
If 6 horses are racing at a track, how many ways can 3 horses take place in the top 3 places? O 18 O 20 O 120