which is a perfectsquare diveided by 21,36

• factors
  21= 3*7
  36= 6*6 = 2*2*3*3 (perfect square bcz all factors are in pair of 2)
  No(perfect square) is divided by 21&36 both
  it must have factors = 2 (2 times), 3 (2 times) for complete division by 36
  7 (1 time) (no need to consider 3 again) for complete division by 21
  factors=2*2*3*3*7 but No is perfect square so all factors must be in pair
  No =2*2*3*3*7*7= 1764 (multiplied by 7 to form perfect square)
  
• 9 years agoHelpfull: Yes(6) No(0)
• The question would be like
  which is a perfect square divided by 21,36 and 66
  L.C.M. of 21, 36, 66 = 2772.
  
  Now, 2772 = 2 x 2 x 3 x 3 x 7 x 11
  
  To make it a perfect square, it must be multiplied by 7 x 11.
  
  So, required number = 22 x 32 x 72 x 112 = 213444
• 9 years agoHelpfull: Yes(5) No(9)
• lcm of 21, 36 is 2*2*3*3*7
  
  to make it a perfect square multiply with 7
  1764 is the ans
• 9 years agoHelpfull: Yes(4) No(0)
• 36
  because 6*6
• 9 years agoHelpfull: Yes(0) No(1)
• ans. 1764
• 9 years agoHelpfull: Yes(0) No(0)
• factors 21=3*7 36=2*2*3*3
  3 and 7 needed for perfect square so number=3*7*21*36 = 15876
  
• 9 years agoHelpfull: Yes(0) No(1)