56,89,33,21,7,88,35,19,60,85,30?

• Question is ==56,89,33,21,57,88,35,19,60,85,39?
  
  (56,89,33,21),(57,88,35,19),(60,85,39?)
  56+1=57
  89-1=88
  33+2=35
  21-2=19
  57+3=60
  88-3=85
  35+4=39
  19-4=15
  answer is 15
• 9 years agoHelpfull: Yes(37) No(2)
• This question is wrong. instead of 7 it should be 57.
  This question is already being answered earlier in this page.
• 9 years agoHelpfull: Yes(7) No(0)
• there is multiple series in this,
  as i earlier posted the answer in different way.. + & - concept in every term.
  i.e. 56+1=57, 89-1=88, 33+2=35,21-2=19
  now, for next term in the answer i.e. 57+3=60,88-3=85, 35+4=39, 19-4=15.
  so , answer is 15.
• 9 years agoHelpfull: Yes(1) No(0)
• there is multiple series and in 21 , 19, 15 is next one as there is difference of even negative of 2 i.e. -2, -4 etc.
• 9 years agoHelpfull: Yes(0) No(2)
• can anyone plz explain this clearly.thanks in advance
  
• 9 years agoHelpfull: Yes(0) No(1)
• (56,89,33,21),(57,88,35,19),(60,85,39,?)
  56+1=57(+1) 89-1=88(-1) 33+2=35(+2) 21-2=19(-2)
  57+3=60(+3) 88-3=85(-3) 35+4=39(+4) 19-4=15(-4)
  hence 15 is ans
  
• 8 years agoHelpfull: Yes(0) No(0)