You multiply -6 and -2/3. Which is 4
It’s c because when the number of simply it gets u that
Answer: There is probability of 0.57 chances that exactly three students from a group of four students have not passed Exam P/1 or Exam FM/2.
Step-by-step explanation:
Total number of students = 8
Number of student who has passed Exam P/1 = 1
Number of student who has passed Exam FM/2 = 1
No student has passed more than one exam.
According to question, exactly three students from a randomly chose group of four students have not passed Exam P/1 or Exam FM/2.
So, Probability will be
![\frac{^6C_3\times ^2C_1}{^8C_4}\\\\=\frac{20\times 2}{70}\\\\=\frac{4}{7}\\\\=0.57](https://tex.z-dn.net/?f=%5Cfrac%7B%5E6C_3%5Ctimes%20%5E2C_1%7D%7B%5E8C_4%7D%5C%5C%5C%5C%3D%5Cfrac%7B20%5Ctimes%202%7D%7B70%7D%5C%5C%5C%5C%3D%5Cfrac%7B4%7D%7B7%7D%5C%5C%5C%5C%3D0.57)
Hence, there is probability of 0.57 chances that exactly three students from a group of four students have not passed Exam P/1 or Exam FM/2.
Answer:
13 protons
14 neutrons
13 electrons
Step-by-step explanation:
protons and electrons are mostly always the same