7] In a college, 200 students were \( \quad 3 \) points surveyed: 120 students are taking Mathematics, 80 students are taking Physics, and 50 students are taking both mathematics and Physics. What is the total number of students who are taking Mathematics only and neither of the subjects?

إذا كان الاختلاف للمتغيرين ودرجات الطالب 0.60 فهذا

A survey found that 24\% of third-level students in a particular country find mathematics more approachable after their first year at university. In a follow-on study, 20 third-year students are randomly selected. What is the expected number of third-year students that would still not find mathematics more approachable than when entering university? 4.8 3.6 15.2

2. (a5-g8-13) Uch o'quvchining o'racha balll 72,6 ga teng, boshqa ikki o'quvchining o'tacha balli \( 76,1 \mathrm{ga} \) teng. Bu besh o'quvchining o'rtacha balli nechaga teng? \( \begin{array}{ll}\text { A) } 74,0 & \text { B) } 73,4 \\ \text { C) } 74,35 & \text { D) } 75,2\end{array} \)

إذا كان الاختلاف للمتغيرين ودرجات الطالب 0.60 فهذا

A census team is advised to avoid omissions and duplications during enumeration. Which of the following ensures this quality in a census? a. Defining a specific point in time for data collection. b. Including only economically productive individuals. conducting the census every 20 years.