![subject](/tpl/images/cats/mat.png)
Mathematics, 11.09.2021 04:40 jordanrini
Permutation and Combination
(Combination)
How many different 20-question examinations can be formed from a test-bank of 30 questions?
30 c 20
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 13:20
Which equation and solution can be used to solve this problem? thirteen less than a number is sixteen. 13-n=16: add 13 to both sides. the answer is 29. n+13=16: subtract 13 from both sides. the answer is 3. n+16=13 subtract 13 from both sides. the answer is 3. n-13=16: add 13 to both sides. the answer is 29.
Answers: 1
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
You know the right answer?
Permutation and Combination
(Combination)
How many different 20-question examinations can be...
How many different 20-question examinations can be...
Questions
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 15.05.2021 16:50
![question](/tpl/images/cats/mat.png)
Mathematics, 15.05.2021 16:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 15.05.2021 16:50
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 15.05.2021 16:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 15.05.2021 17:00
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
Health, 15.05.2021 17:00
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)