A set M contains element all even number between 1 and 23 and all odd numbers 24 and 100. if all the elements of the set multiplied than how many trailing 0 , resulting number will contains?
a-10
b-12
c-9
d- not remember?

• ( Answer will be 12 )
  
  because the result trailing 0 occurs when one 2 and one 5 multiplied.
  
  here we see the set M:
  
  ( 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 25, 35, 45, 55, 65, 75, 85, 95 )
  
  after 22 I have taken only the term which contains factor of 5
  
  now we find prime factor
  
  2 = 2
  4 = 2 * 2
  6 = 2 * 3
  8 = 2 * 2 * 2
  10 = 2 * 5
  12 = 2 * 2 * 3
  14 = 2 * 7
  16 = 2 * 2 * 2 * 2
  18 = 2 * 3 * 3
  20 = 2 * 2 * 5
  22 = 2 * 11
  25 = 5 * 5
  35 = 5 * 7
  45 = 5 * 9
  55 = 5 * 11
  65 = 5 * 13
  75 = 5 * 5 * 3
  85 = 5 * 17
  95 = 5 * 19
  
  here we find
  total number of 5 is 12
  and
  total number of 2 is 19
  
  and
  we get total number of 5 * 2 pair is 12
  so number of trailing zero will be 12
  
  
• 8 years agoHelpfull: Yes(52) No(4)
• 12 because m={10,20 } &{25,35,45,55,65,75,85,95}
  in set m number of 5 is 12.
• 8 years agoHelpfull: Yes(23) No(8)
• correct answer is 12
  explanation:
  m=(2,4,6,8,10,12,14,16,18,20,22,25,27,29,31,33,35,37,39,41,43,45,47,49,51,53,55,57,59,61,63,65,67,69,71,73,75,77,79,81,83,85,87,89,91,93,95,97,99)
  question asked how many trailing 0
  there are two condition
  1st if we multiply 2*5=10
  end with =0
  if we count 5 in set m we get 12
  if we count 2 in set m we get more than 12
  so total no end with 0 equal to 12
  
• 8 years agoHelpfull: Yes(3) No(0)
• 10
  because there are two 0's and eight 5's
  So total 10 zeros will come
• 8 years agoHelpfull: Yes(1) No(3)
• 12 is the answer..bcoz (5*2)=10 , 5 and 2 makes one zero, and there are 12 '5'. and no of 2's will be more than 12 ....so 12 '5' will make 12 zeros...
• 8 years agoHelpfull: Yes(1) No(2)
• find no. of 5 =no. 0's
• 8 years agoHelpfull: Yes(1) No(0)
• last option was 11
• 8 years agoHelpfull: Yes(0) No(1)
• any one know when 2nd oct result will be announce?
• 8 years agoHelpfull: Yes(0) No(3)
• 9 because 2,4,8,10,12,14,18,20,22 will be multiplied with odd no 25,35,45,55,65,75.85.95
• 8 years agoHelpfull: Yes(0) No(0)
• 10
  I will tell you why
  2*25
  4*35
  5*45
  6*55
  8*65
  10
  12*75
  14*85
  16*95
  20
  
  all even numbers multiplied by 5 multiples give leading zeros and all ten multiples five leading zero ! Thus 10 !
• 8 years agoHelpfull: Yes(0) No(5)
• 25-100=there are 10 fives
  1-23=there are 19 two's
  subtracting 10 two's=19-10=9
  we excluded 10 two's beacuse we are multiplying 5*2 ten times.
  5x2=10 and 4x2=8
  we exclude 4 two's because we are not getting reaminder as zero.
• 8 years agoHelpfull: Yes(0) No(0)
• The answer will be 12....
  Because 10 and 20 gives 2 zeros
  (25,35,45,55,65,75,85,95)* multiply with even digits gives 8 more
  2 even digits left. multiplied with upper product they will give 2 more zeros
  so total= 2+8+2= 12 zeros
• 7 years agoHelpfull: Yes(0) No(0)