![enrique764058](/avatars/24160.jpg)
enrique764058
19.06.2020 •
Mathematics
What is the area of the garden in Plan A? (Type the numeric answer only
Solved
Show answers
More tips
- L Leisure and Entertainment When will Maslenitsa start?...
- F Food and Cooking Discovering the Mysterious Fruit of Feijoa...
- B Business and Finance How to Open an Online Store? A Detailed Guide for Beginners...
- W Work and Career How to Write a Resume That Catches the Employer s Attention?...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
- T Travel and tourism Maldives Adventures: What is the Best Season to Visit the Luxurious Beaches?...
Answers on questions: Mathematics
- M Mathematics Djdsklsa;jska da;kja849381-09...
- M Mathematics Overlapping events are events that have at least one outcome in common. True False...
- M Mathematics Eli saves money each month to buy a new computer. He kept track of his progress in the following table and a graph that he drew. How much does Eli add to his savings...
- M Mathematics Roselyn is driving to visit her family, which lives 150 kilometers away. Her average speed is 60 kilometers hour. The car s tank has 20 liters of fuel at the beginning...
- M Mathematics Family buys b boxes of frozen waffles,each containing w waffles. every week the family eats x waffles. write an equation in terms of b w and x that represents the number...
- M Mathematics Please show the work....
- M Mathematics Given that f(x) = 6x + 2 and g(x) = 2x + 4 5 solve for g(f(1)). 1 03 4 8...
- M Mathematics Kate is making a pasta salad for her family party. She has 3 pounds of pasta salad to serve 12 people. She wants to give an equal amount of pasta salad to each person...
- M Mathematics Please help me! ;_; I’m so lost here if you could help thanks...
- M Mathematics Darnell is 5 times 3 less then Kortez age. Darnell is 40 how old is Kortez?...
Ответ:
In 68229 ways can the quiz be selected such that there is atleast three multiple choice questions
Step-by-step explanation:
Given:
Number of True or false questions= 10
Number of multiple choice questions= 20
To Find:
How many ways can 5 questions can be selected if there must be at least three multiple choice questions =?
Solution:
Combination
A combination is a mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter. In combinations, you can select the items in any order.
The question States there sholud be ATLEAST 3 multiple choice question,
So, we may have
(3 Multiple choice question and 2 true or false question) or
(4 Multiple choice question and 1 true or false question) or
(5 Multiple choice question and 0 true or false question)
Required Number of ways = (20C3 X10C2) +(20C4 X10C1) + (20C5 X10C0)
Required Number of ways![=(\frac{20!}{20!(20-3)!}\times\frac{10!}{10!(10-2)!})+(\frac{20!}{20!(20-4)!} \times \frac{10!}{10!(10-1)!}) +(\frac{20!}{20!(20-4)!} \times \frac{10!}{10!(10-0)!})](/tpl/images/0389/3374/67b34.png)
Required Number of ways = ( 1140 x 42) + (4845 x 10) +(15504 x 1)
Required Number of ways = 47880+48450+15504
Required Number of ways = 68229