What is the next number 10 72 30 20 83 69 89?

• The differences are
  +62,-42,-10,+63,-14,+20,? It should be 64. So the ans is 89+64=153
• 7 years agoHelpfull: Yes(12) No(3)
• 72-10=62
  83-20=63
  89+64=153
  now the difference between 153 and 89 is 64 so the ans in 64
• 7 years agoHelpfull: Yes(6) No(6)
• I think 75 is the Answer
• 7 years agoHelpfull: Yes(2) No(17)
• Is the question is correct..check once??
• 7 years agoHelpfull: Yes(0) No(2)