NextMockSearch exams, e.g. SSC CGL, UPPSC, Lekhpal
Railways PYQCBT 2 2017

RRB NTPC · Question 47

Read the following information and answer the questions given below: A has 28 elements, B has 32 elements and (A U B) has 40 elements. How many elements are present only in B?

  1. 28

  2. 18

  3. 12

  4. 10

Show answer & explanation

Answer: (C) 12

Explanation

Elements only in B = n(B) − n(A ∩ B) = 32 − 20 = 12.