56,89,33,21,57,88,35,19,60,85,30,____

• (56,89,33,21),(57,88,35,19),(60,85,30,x)
  
  1st terms of brackets => 56 , 56 + 1 , 56 + 4
  2nd terms of brackets => 89 , 89 - 1 , 89 - 4
  ----------------------------------------------------------
  3rd terms of brackets => 33 , 33 + 2 , 33 - 3
  4th terms of brackets => 21 , 21 - 2 , 21 + 3 = x
  
  => x = 24
• 11 years agoHelpfull: Yes(90) No(16)
• 56+89+33+21=199
  57+88+35+19=199
  60+85+30+x=175+x
  x=199-175=24
  ans=24
• 11 years agoHelpfull: Yes(67) No(3)
• ans is 24
  (56,89,33,21) (57,88,35,19) (60,85,30,x)
  
  56 89 33 21
  (+1) (-1) (+2) (-2)
  57 88 35 19
  (+3) (-3) (-5) (+5)
  60 85 30 24
• 11 years agoHelpfull: Yes(18) No(7)
• Is the answer 24 or 15 ...
• 11 years agoHelpfull: Yes(8) No(6)
• (56,89,33,21),(57,88,35,19),(60,85,30,?)
  56+1=57
  89-1=88
  33+2=35
  21-2=19
  
  57+3=60
  88-3=85
  35+4=39
  19-4=15
  
  so answer is 15
  
• 11 years agoHelpfull: Yes(5) No(10)
• next term will be 24.
  see 1st group--- 56,57,60 ( +1,+3)
  2nd group------89,88,85 (-1,-3)
  3rd group-------33,35,30(+2,-5)
  4th group------21,19,___(-2,+5) so 19+5=24
• 9 years agoHelpfull: Yes(2) No(1)
• 56 89 33 21
  
  + - + -
  
  1 1 2 2
  
  =57 =88 =35 =19
  
  + - - +
  
  3 3 5 5
  
  =60 =85 =30 =24
  
  So, 24 is the answer
• 8 years agoHelpfull: Yes(1) No(0)
• @Vinay
  answer is 24....
  please explain?
• 11 years agoHelpfull: Yes(0) No(0)