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NTSE Sample Paper NTSE SAT Practice Test-9

  • question_answer
    The number 40500 is said to end in two zeroes. How many zeroes are in the end of \[({{5}^{1999}}\times {{2}^{1998}}\times {{10}^{2000}})\]?

    A) 1999                

    B) 2000

    C) 3998     

    D) 3999

    Correct Answer: C

    Solution :

    [c] When 2 is multiplied by 5, a zero occurs. Since the number of 2 is 1998, there will be 1998 zeroes, and m I02000, there are 2000 zeroes. Hence, there are 2000 + 1998 i.e. 3998 zeroes.                 


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