what is the least number by which 16,800 must be divided to get a number perfect square
a)21
b)42
c)24
d)40

• 42 is r8 answer
• 9 years agoHelpfull: Yes(15) No(1)
• 16,800/42=400
  400=(20)^2
  Ans-42
  
• 9 years agoHelpfull: Yes(6) No(0)
• factors of 16,800=2power5*3*5poer2*7=if we multiply with 42
• 9 years agoHelpfull: Yes(4) No(1)
• If we can L.C.M of 16800 then we will find 2,3,7 which will not a square term.
  So,2*3*7=42 will be the answer. which divided by 16800 to get a perfect square
• 7 years agoHelpfull: Yes(2) No(0)
• 16800/42=400
  400 is a square num of 20
  ans:42
• 9 years agoHelpfull: Yes(1) No(0)
• 16800/42=400
  400 is a square num of 20
  ans:42
• 9 years agoHelpfull: Yes(1) No(1)
• 42 is right answer...
  16,800/42=400
  400=20 *20 which is a perfect square.
• 9 years agoHelpfull: Yes(1) No(0)
• 16800/42=400 which is a perfect square of 20
• 9 years agoHelpfull: Yes(1) No(0)
• factors of 16800 = 2^5 * 5^2 * 3 *7
  now if we take away one 2 , one 3 and one 7 then it will become a perfect square.
  so the number is 42 by which 16,800 must be divided to get a perfect square i.e 7 x 3 x 2 = 42
• 6 years agoHelpfull: Yes(1) No(0)
• ans b. as16800/42=400 which is 20^2=400
• 8 years agoHelpfull: Yes(0) No(1)
• ans-(A)
  bec 21*21=168
• 8 years agoHelpfull: Yes(0) No(8)
• 16800/42=400
  400 is perfect square of 20
  hence ans is 42
• 6 years agoHelpfull: Yes(0) No(0)
• factor of 16800=4*4*5*5*7*2*3
  ---> 7*2*3=42
  so , 42 is Answer
• 5 years agoHelpfull: Yes(0) No(0)
• 16800 is 40
• 2 years agoHelpfull: Yes(0) No(0)