Total number of different committees = C(14,6) = N
We have two cases where we have less than 2 teachers.
case 1: 1 teacher (out of 5)
Number of ways to choose 1 teacher = C(5,1) = 5
Number of ways to choose the remaining members from students = C(9,5)
Total number of ways to choose a committee with exactly 1 teacher = 5C(9,5) = N1
case 2: no teacher
Number of ways to choose 6 students = C(9,6) = N2
Probability to choose at least two teachers
= (N-N1-N2)/N
=109/143
I hope tmy answer helps you
Answers:
1.) D
2.) B
The pons plays a crucial role in REM sleep, which is the state of sleep in which dreaming occurs.
Answer:
It would be the forest floor.
Explanation:
The forest floor is the lowest level, and therefore is covered by things above it.
Answer:
A. their amounts vary throughout the atmosphere
Explanation:
Atmosphere consists of number of gases and composition of atmosphere varies depending on the amount of gases present in the atmosphere. The percentage of carbon dioxide in atmosphere is 0.04% while that of water vapors is 4% at normal room temperature.
Answer:
b. completely by mitosis
Explanation:
Mitosis is a process of cell duplication in which one cell gives rise to two genetically identical daughter cells. Strictly applied, the term mitosis is used to describe the duplication and distribution of chromosomes, the structures that carry the genetic information. In the context of the cell cycle, mitosis is the part of the division process in which the DNA of the cell's nucleus is split into two equal sets of chromosomes.