What is the next number of the following sequence
-15,-14, 34,32,-42 ,-39,58,54,-61,?

• -14-(-15) = 1
  32-34 = -2
  -39-(-42) = 3
  54-58 = -4
  so the next difference should be 5
  x-(-61)=5
  x=-56
  
  Ans : -56
  
  
  
• 10 years agoHelpfull: Yes(45) No(0)
• -15+1=-14
  34-2=32
  -42+3=-39
  58-4=54
  -61+5=56(ans)
• 10 years agoHelpfull: Yes(1) No(3)
• consider 2 terms like:
  -15-(-14)= -1
  34 - 32 = -2
  -42-(-39)= -3
  58 - 54 = -4
  therefore ,next difference should be -5, ie
  -61 - ( x)= -5
  x= -61 +5 =-56 is the answer.
• 10 years agoHelpfull: Yes(0) No(0)
• decrease -1,-2,-3,-4 in b/n 2 num's
  ans:-56
• 10 years agoHelpfull: Yes(0) No(0)
• In decreasing order diff between two no's 1,-2,3,-4,5
  ans:-56
• 10 years agoHelpfull: Yes(0) No(0)
• -15,-14,34,32,-42,-39,58,54,-61,x
  
  -15+1=-14
  34-2=32
  -42+3=-39
  58-4=54
  -61+5=-56
  because series pattern is altenate sign with 1 increment in number
• 10 years agoHelpfull: Yes(0) No(0)
• -14-(-15)=+1
  32-34=-2
  -39-(-42)=+3
  54-58=-4
  x-(-61)=+5
  so x=-56
  ans)-56
• 9 years agoHelpfull: Yes(0) No(0)