Question

In a class of 80 students numbered 1 to 80, all even numbered students opt

for physics, whose numbers are divisible by 5 opt for chemistry and those

who are divisible by 7 opt for mathematics.

Based on the above information answer the following questions [8(i)-8(iv)]:

Q8(i). Number of students who offered mathematics

(A) 11 (B) 10 (C) 40 (D) 21

Q8(ii). Number of students who offered all three subjects

(A) 2 (B) 3 (C) 1 (D) 4

Q8(iii). Number of students who offered physics only

(A) 28 (B) 7 (C) 5 (D) 12

Q8(iv). Number of students who offered at least one subject

(A) 50 (B) 52 (C) 80 (D) 53​

Answer 1

Answer:

hello everyone

1.) 11

2.) 1

3.) 28

4.) 80