Find the missing in the series: 70, 54, 45, 41,____.

• 70-54=16=4^2
  45-54=9=3^2
  45-41=4=2^2
  41-40=1=1^1
  So the ans is 40
• 10 years agoHelpfull: Yes(44) No(1)
• Sol: 40
  70-54 = 16 = 42
  54-45 = 9 = 32
  45-41 = 4 = 22
  41-40 = 1 = 12
• 10 years agoHelpfull: Yes(2) No(5)
• ans= 40......series is similar to:
  70-4^2 = 54.
  54-3^2 = 45.
  45-2^2 = 41.
  41-1^2 = 40...
• 10 years agoHelpfull: Yes(2) No(1)
• Ans is 40.
  70-54=16(4^2)
  54-45=9(3^2)
  45-41=4(2^2)
  41-40=1(1^2)
  
  
• 10 years agoHelpfull: Yes(1) No(0)
• 40
  70-54=(4)^2
  54-45=(3)^2
  45-41=(2)^2
  s0 1^2=1 i.e., 41-1=40
• 10 years agoHelpfull: Yes(1) No(0)
• ans=40
  70-16=54
  54-9=45
  45-4=41
  41-1=40
• 10 years agoHelpfull: Yes(0) No(0)
• ans :40 , 70 to 54 4^2 is the difference and 54 to 45 3^2 and 45 to 41 2^2 and 41 to 40 1^2
• 10 years agoHelpfull: Yes(0) No(0)
• 70-54=16
  54-45=9
  45-41=4
  41-40 = 1
  So, 16,9 and 4 are the squares of 4,3,2 respectively So Subtract 1 from 41 you will get 40 as answer
  
• 10 years agoHelpfull: Yes(0) No(0)
• answer is 40
  explanation: 70-4^2 = 54 - 3^2 = 45 - 2^2 = 41 - 1^2 = 40
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• ans is 40.........
  
• 10 years agoHelpfull: Yes(0) No(0)
• 40
  70-54=16=4^2
  54-45=9=3^2
  45-41=4=2^2
  next, we need to subtract 1^2 from 41.so ans is 40
  
• 10 years agoHelpfull: Yes(0) No(0)
• 70,54,45,41,40
• 10 years agoHelpfull: Yes(0) No(0)
• 40
  70-16=54 (4)^2=16
  54-9=45 (3)^2=9
  45-4=41 (2)^2=4
  41-1=40 (1)^2= 1
• 10 years agoHelpfull: Yes(0) No(0)
• ans is 40
  70-40=16 4^2
  54-45=9 3^2
  45-41=4 2^2
  41-40=1 1^2
• 10 years agoHelpfull: Yes(0) No(0)
• 70-54= 16= 4*4
  54-45= 9= 3*3
  45-41= 4= 2*2
  41- _ = 1=1*1
  So, the answer is 40
  
• 10 years agoHelpfull: Yes(0) No(0)
• 40.......1^2
• 10 years agoHelpfull: Yes(0) No(0)
• 38
  because in first two terms difference is 16 then 9 then 4, 4 is square root of 16 so now it will reduce by 9 square root i.e. by 3 so answer will be 38
• 10 years agoHelpfull: Yes(0) No(1)
• ans is 40
  series of squares in decreasing is used
• 10 years agoHelpfull: Yes(0) No(0)
• 70-54=16=(4)^2
  54-45=9=(3)^2
  45-41=4=(2)^2
  so the next will be 40 as 41-40=1=(1)^2
• 10 years agoHelpfull: Yes(0) No(0)
• 75-54=16=4^2
  54-45=9=3^2
  45-41=4=2^2
  next difference would be 1^2
  41-40=1=1^2
  answer:40
• 10 years agoHelpfull: Yes(0) No(0)
• 70-54=16
  54-45=9
  45-41=4
  all 16,9 and 4 are the perfect square of 4,3 and 2 respectively.so the next blank space will contain
  41-40=1
  so,the value is 40.
• 10 years agoHelpfull: Yes(0) No(0)
• 40.
  70-54=4^2,54-45=3^2,45-41=2^2,41-40=1^2
• 10 years agoHelpfull: Yes(0) No(0)
• 70-54=16 => (4)^2
  54-45=9 => (3)^2
  45-41=4 => (2)^2
  41-40=1 => (1)^2
  so the answer is 40
• 10 years agoHelpfull: Yes(0) No(0)
• 40
  Tge series is reduced by squares I.e. 16,9,4,1
• 10 years agoHelpfull: Yes(0) No(0)
• 70-54=16=4^2
  45-54=9=3^2
  45-41=4=2^2
  41-40=1=1^1
  So the ans is 40
• 10 years agoHelpfull: Yes(0) No(0)
• 70-54=16(4*4)
  54-45=9(3*3)
  45-41=4(2*2)
  41-?=1(1*1)
  ans=41-1=40.
• 10 years agoHelpfull: Yes(0) No(0)
• 40 41-1 =40
  
• 10 years agoHelpfull: Yes(0) No(0)
• 70-54=16=4^2
  54-45=9=3^2
  45-41=4=2^2
  41-40=1=1^1
  answer should be "1"
• 10 years agoHelpfull: Yes(0) No(0)
• 40 will be the answer !!!
• 10 years agoHelpfull: Yes(0) No(0)
• 70 - 54 = 16
  54 - 45 = 9 16 - 9 = 7
  45 - 41 = 4 9 - 4 = 5
  41 - x = ? next difference would be 3
  so, 4 - x = 3
  x = 1
  41 - 1 = 40
  
  ans. 40
• 4 years agoHelpfull: Yes(0) No(0)
• 70-54=16 square of 4
  54-45=9 square of 3
  45-41=4 square of 2
  41-40=1 square of 1
  ans=40
• 4 years agoHelpfull: Yes(0) No(0)