Types of Students in Exam Hall | Relatable ?

Class 12 Physics Board Exam - Last Day Study Tips + Exam Hall Strategy

There are some students in the two examination halls A and B. To make the number of students equal in each hall, 10 students are sent from A to B but, if 20 students are sent from B to A, the number of students in A becomes double the number of students in B, then find the number of students in the both halls.

(A) Mobile phones nowadays have a lot of features and it is easy to cheat with their help. (B) The invigilator must immediately confiscate the mobile phones and ask the students to leave the exam hall immediately. (C) Mobile phones arc very expensive and leaving them in bags outside the exam hall is not safe. (D) There have been incidents where students who left the exam hall early stole the mobile phones kept in the bags of the students who were writing the exam. (E) The school authorities must ask the students to leave their phones in the custody of the invigilator before the exam in order to avoid thefts of mobile phones. (F) None of the other students were carrying their phones in the exam hall. Which of the following among (A), (B), (D) and (F) can be an immediate course of action for the invigilator?

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