Find the number of zeroes in the expression 15*32*25*22*40*75*98*112*125
a. 12
b. 9
c. 14
d. 7

• (3*5)*(2*2*2*2*2)*(5*5)*(2*11)*(2*2*2*2*5)*(5*5*3)*(2*7*7)*(2*2*2*2*7)*(5*5*5)
  there are 9 (5*2) pairs which gives zero
  so.no of zeros 9
• 9 years agoHelpfull: Yes(36) No(0)
• no. of zeros depend upon no. of 5 and 2,i.e 5*2=10,i.e one zero.
  there no. of 5 lees than no. of 2. Hence no.of zero equal to the no. of zero present.
  for 15=5*3 i.e one 5.
  similarly,25=5*5,40=5*8,75=5*5*3,125=5*5*5
  total no. of 5 are 9
  hence there 9 zeros are present.
• 9 years agoHelpfull: Yes(7) No(0)
• b.9
  counting the pairs of 5*2
• 9 years agoHelpfull: Yes(3) No(0)
• no of zeros=pair of 5*2
  no of 5 =9
  so 9zeros
• 9 years agoHelpfull: Yes(2) No(0)
• answer is 9
• 9 years agoHelpfull: Yes(1) No(1)
• number of zeros depend on number of 5's & 2's
  in above expression number of 2's are more than number of 5's
  so total number of 5's is 9
  number of zeros==9
• 9 years agoHelpfull: Yes(1) No(0)
• NUMBER OF FIVE IS 9 SO NUMBER OF 0 WILL BE NINE
• 9 years agoHelpfull: Yes(1) No(0)
• b.9 counting the number of zeroes
• 9 years agoHelpfull: Yes(1) No(0)
• no of 5=9
  hence no of zero=9
• 9 years agoHelpfull: Yes(1) No(0)
• 9 as max power of 5 is 9
• 9 years agoHelpfull: Yes(1) No(0)
• solution is 9..as it contain 9 pairs of 2*5
  
• 9 years agoHelpfull: Yes(1) No(0)
• 9 zeros-5^9*2^14 means 9 zeros
• 9 years agoHelpfull: Yes(0) No(0)
• 9
  break the expression up, conveniently, 15*32, 25*22, 40*75, (98 or 112)*125
  480*550*3000*98*14000
  264000*98*42000000
  x*10^9
  
  x is a number ending with 24
  thus 9
• 9 years agoHelpfull: Yes(0) No(1)
• no. of pairs of 5*2= no. of zeroes
  here 5*2= 9 pairs thats why 9 pairs ans
• 9 years agoHelpfull: Yes(0) No(0)
• b.9 in finding number of zeros means simply find no. of five because when 5 multiply with even number get zero so we simply count no. of 5
  
  3*5*32*5*5*22*5*8*5*5*3*98*112*5*5*5
  so number of5=9
• 9 years agoHelpfull: Yes(0) No(0)
• 15=3*5
  25=5*5
  40=8*5
  75=5*5*3
  125=5*5*5
  total no. of 5 's is 9
  
• 9 years agoHelpfull: Yes(0) No(0)
• no of zeros are formed with how many pairs of 5*2 are there so there are (5*3)*(2*2*2*2*2)*(5*5)*(2*11)*(2*2*2*5)*(5*5*3)*(2*2*7)*(2*2*2*2*7)*(5*5*5)
  so there are no of total 5-9
  total no of 2-12
  so there are 9 pair of 2 and 5 formed
  
• 9 years agoHelpfull: Yes(0) No(0)
• m4maths pls provide us right answers.how we get to know which one answer is correct or which one is wrong
• 7 years agoHelpfull: Yes(0) No(0)