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9th Class Mental Ability Related to Competitive Exam Question Bank Arithmetical Reasoning

  • question_answer
    Direction for questions: Circle A represents even numbers from 2 to 50. Circle B represents odd numbers from 2 to 50. Circle C, represents prime numbers from 2 to 50.
    How many elements are there in set B only?

    A) 14                       

    B)         25

    C) 10     

    D)        13

    E) None of these

    Correct Answer: C

    Solution :

    Explanation Option [c] is correct. There are 10 elements in only set B, i.e., there are 10 odd numbers which are not primes.                  


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