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6th Class Mental Ability Numbers Question Bank Number System

  • question_answer
       A fan rotates on its shaft around 5 times in one second. How many times does the fan rotate in a day if there was no electricity for 2 hours?

    A) 396000 times  

    B)        39600 times

    C) 395000 times 

    D)        398000 times

    E) None of these      

    Correct Answer: A

    Solution :

    Explanation Option [a] is correct because, fan rotates 5 times in 1 second. Number of times fan rotates in \[1\text{ }hour=5\times 3600.\] Number of times fan rotates in \[22\text{ }hours=5\times 3600\times 22=396000\text{ }times.\]


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