56,89,33,21,57,88,35,19,60,85,39,50,65,?

• Ans is 80
  lets see clearly:-)
  56 after three terms 57 after three terms 60 after three terms 65
  so u can notice 56,57,60,65 (56, +1, +3, +5)
  llly
  89,88,85,()
  so u can notice (89, -1, -3, -5),
  so the term is clearly 80...
  enjoy.......
• 12 years agoHelpfull: Yes(33) No(2)
• 4 different series,
  1st series: 56, 57, 60, 65 (+1, +2, +3, +5)
  2nd series: 89, 88, 85, ? (-1, -2, -3, ?)
  
  So symmetrically 5 should be deducted from last number of 2nd series: 85-5=80 Ans
• 12 years agoHelpfull: Yes(11) No(0)
• 56,57,60,65 is one series hv diff is +1,+3,+5 diff,89,88,85,? is 2nd hv diff -1,-3,-5 so solution is 80 and no need to make rest of series.
• 12 years agoHelpfull: Yes(2) No(0)
• there are 4 series..
  56,57,60,65(+1,+3,+5,+7)
  89,88,85,?=78(-1,-3,-5,-7)
  33,35,39
  21,19,50
  
• 12 years agoHelpfull: Yes(0) No(1)
• ans 80
  4 series
  missing series 89,88,85,?
  89,(89-1),(88-3),(85-5) so 80
• 12 years agoHelpfull: Yes(0) No(0)
• ans:80
  (56,89,33,21)
  (57,88,35,19)
  (60,85,39,50)
  (65,x,......)
  diffrence in first vertical row is like increase in 1,3,5....in &
  second vertical row is like decrease in 1,3,5.........
  in third vertical row is like increase in 2,4,6.....
  therefore, in second vertical row x=85-5=80 bcoz here no's are decreased in 1,3,5.... series
  
• 11 years agoHelpfull: Yes(0) No(0)