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pls help me solve this

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  • meet_sva
    find how many zeros are there in the end of 270 !
    Message 1 of 4 , Aug 23, 2004
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      find how many zeros are there in the end of 270 !
    • arpita bhargava
      The answer is 66. Its done in this way: 270/5 = 54 ( lowest integer) 54/5 = 10 10/5 = 2 Total 0s= 54+10+2 = 66 meet_sva wrote:
      Message 2 of 4 , Sep 7, 2004
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        The answer is 66.
        Its done in this way:
         
        270/5 = 54 ( lowest integer)
        54/5   = 10
        10/5  =   2
        Total 0s= 54+10+2 = 66
         


        meet_sva <meet_sva@...> wrote:

        find how many zeros are there in the end of 270 !




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      • Vaibhav Saxena
        No of zeros after 270!: No of factors giving 2=270/2=135 No of factors giving 4=270/4=67 No of factors giving 8=270/8=33 No of factors giving 16=270/16=16 No
        Message 3 of 4 , Sep 8, 2004
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          No of zeros after 270!:
          No of factors giving 2=270/2=135
          No of factors giving 4=270/4=67
          No of factors giving 8=270/8=33
          No of factors giving 16=270/16=16
          No of factors giving 32=270/32=8
          No of factors giving 64=270/64=4
          No of factors giving 128=270/128=2
          No of factors giving 256=270/256=1




          No of factors giving 5=270/5=54
          No of factors giving 25=270/25=10
          No of factors giving 125=270/125=2



          hence 270! is divisible by (5 to the power 66) * (2 to the power of 266)


          hence it is divisible by 10 to the power of 66
          hence no of zeros in 270!=66



          VAIBHAV SAXENA
          B-tech Chemical Engg(4th yr)
          IIT-KGP











          On Tue, 24 Aug 2004 04:42:43 -0000, meet_sva <meet_sva@...> wrote:
          >
          >
          > find how many zeros are there in the end of 270 !
          >
          >
          > Ascent Education
          > An IIM Alumni Venture
          > Class for CAT, XAT, GRE, GMAT
          > http://www.ascenteducation.com
          >
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        • chaitanya shastry
          to find the number of zeros at end of any factorial given: 1.so,270!, first find which power of five is nearest to 270. so,5 power 3 is 225.it is nearest to
          Message 4 of 4 , Sep 12, 2004
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            to find the number of zeros at end of any factorial given:
                 1.so,270!,
                        first find which power of five is nearest to 270.
                          so,5 power 3 is 225.it is nearest to 270.
                           therefore,divide 270 by both 5 and 225.
                           i.e. 270/225=1.6....,so leave the numbers after point.take only 1.now 270/5=54. so ,there r total 1+54=55 zeros in the result of 270!.                  
                            

            arpita bhargava <arpita_bhargava@...> wrote:
            The answer is 66.
            Its done in this way:
             
            270/5 = 54 ( lowest integer)
            54/5   = 10
            10/5  =   2
            Total 0s= 54+10+2 = 66
             


            meet_sva <meet_sva@...> wrote:

            find how many zeros are there in the end of 270 !




            Ascent Education
            An IIM Alumni Venture
            Class for CAT, XAT, GRE, GMAT
            http://www.ascenteducation.com

            Archives of past CAT questions can be viewed at http://questions.ascenteducation.com

            IIM CAT Preparation tips at
            http://iimcat.blogspot.com



            Yahoo! India Matrimony: Find your partner online.

            Ascent Education
            An IIM Alumni Venture
            Class for CAT, XAT, GRE, GMAT
            http://www.ascenteducation.com

            Archives of past CAT questions can be viewed at http://questions.ascenteducation.com

            IIM CAT Preparation tips at
            http://iimcat.blogspot.com



            Yahoo! India Matrimony: Find your life partner online.

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