find no of last zero
1^1 * 2^2 * 3^3 * 4^4........... * 10^10

• 2^2=4
  4^4*4=4^5
  4^5*5^5 makes 5 no.of zeros
  10^10 makes 10 no.of zero
  then the total no of zero is 15
  
• 10 years agoHelpfull: Yes(26) No(1)
• logic behind this is no.of last zeroes= power of 5.
  here 5^5 and ten can be written as (5*2)^10
  therefore power of 5 is 15, which implies there are total 15 last zeroes .
  
  you can check this logic by taking small nos.it holds true.
• 10 years agoHelpfull: Yes(6) No(0)
• 4^4*2^2=4^5=1024
  4^5*5^5=1024*(100/4)=25600 (i.e. 2 zeroes)
  and 10^10 gives 10 zeroes;
  so total no of zeros is 12;
  
• 10 years agoHelpfull: Yes(2) No(1)
• 10^10 makes 10 no of zeros and 2^2=4
  4^4 * 4=4^5
  4^5 *5^5 makes 5 no of zeros . so ans is 10+5=15
• 9 years agoHelpfull: Yes(2) No(0)
• i tink ........ 1
• 10 years agoHelpfull: Yes(1) No(7)
• The answer is 15....we get on multiplication of 2 and 5..so we have to calculate nos. of 2 and 5..thn find the the total no. of combination of 2 and 5...
  here no.s of 5 =5+10=15(from 5^5 and 5^10)
  but no.s of 2 are more than 15..
  So, combination is 15.
  
• 9 years agoHelpfull: Yes(1) No(0)
• We get 4 zero after multiplication
  We have 25 in multiplication = 5*5
  No. Of 5 = no of zeros(also 100)
  Xxxxxxxxxx0000
• 10 years agoHelpfull: Yes(0) No(5)
• I think the ans is 0
• 10 years agoHelpfull: Yes(0) No(4)
• 10
  (10^10)
• 10 years agoHelpfull: Yes(0) No(2)
• i think answer is = 11
  
• 10 years agoHelpfull: Yes(0) No(3)
• answer is 15
• 10 years agoHelpfull: Yes(0) No(0)