In a group of 30 students, each student has opted for at least one of the two subjects, Hindi and English. Twelve of them have opted for Hindi and twenty-two have opted for English. The number of students who have opted for only English is :
22
18
12
8
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC CISF-AC-EXE – 2022
– $|H \cup E| = |H \text{ only}| + |E \text{ only}| + |H \cap E|$.
– $|H| = |H \text{ only}| + |H \cap E|$.
– $|E| = |E \text{ only}| + |H \cap E|$.
Check: Total students = (Only Hindi) + (Only English) + (Both) = 8 + 18 + 4 = 30, which matches the given information.