Find the missing number in the series
70,54,45,41,?

• 70-54=16=4^2
  54-45=9=3^2
  45-41=4=2^2
  41-x=1=1^2
  =>x=40
  
• 10 years agoHelpfull: Yes(24) No(0)
• 70-54=16=4*4
  54-45=9=3*3
  45-41=4=2*2
  so...41-1=40
• 10 years agoHelpfull: Yes(2) No(0)
• 70-16=54 where 16=4^2
  54-9=45 where 9=3^2
  45-4=41 where 4=2^2
  41-1=40 where 1=1^2
  
• 10 years agoHelpfull: Yes(1) No(0)
• difference=4^2
  3^2
  2^2
  1^1
  so missing term=41-1=40
  
• 10 years agoHelpfull: Yes(0) No(0)
• nisa
  naresh
  sures
  abilasa
  usa
  usa
  rites
  rames
  asa
  so cant determine
• 9 years agoHelpfull: Yes(0) No(0)
• 40 is the next number in the series.
• 9 years agoHelpfull: Yes(0) No(1)
• ans=39
  difference is square
• 9 years agoHelpfull: Yes(0) No(0)
• it will be 40
  cz the difference between 70-54=16=4^2
  54-45=9=3^2
  45-41=4=2^2
  41-40=1=1^2
• 9 years agoHelpfull: Yes(0) No(0)
• ans is 40
  
• 8 years agoHelpfull: Yes(0) No(0)
• Ans B
  The 70-54=16 i.e square of 4.
  54-45=9=i.e square of 3
  A 45-41=4 i.e square of 2
  4,3,2 are following a pattern in decreasing order so
  41-x=1 i.e square of 1.
• 5 years agoHelpfull: Yes(0) No(0)
• Diference between 70nd54is:-16
  Diff of 54,45 is:-9
  Difference of 45,41is:-4
  Again the difference between -16,-9is:+7
  Again the difference between -9,-4is :+5
  So +7,+5,+3is the sequence.
  So, -4+3=-1.
  41-1=40
• 5 years agoHelpfull: Yes(0) No(0)