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State PCS PYQPrelims 2022

BPSC – Combined Competitive Examination · प्रश्न 84

In a class of 55 students, 34 like cricket and 26 like badminton; every student likes at least one. How many like both?

4
5
6
3
None of the above / More than one of the above

उत्तर दाखवा आणि स्पष्टीकरण

उत्तर: (B) 5

स्पष्टीकरण

n(A ∩ B) = n(A) + n(B) − n(A ∪ B) = 34 + 26 − 55 = 5.

(A) चूक
Wrong: 34 + 26 − 55 = 5.
(B) बरोबर
Correct: both = 34 + 26 − 55 = 5.
(C) चूक
Wrong: 34 + 26 − 55 = 5.
(D) चूक
Wrong: 34 + 26 − 55 = 5.
(E) चूक
Wrong: only one of the options A–D is correct.