Q. What is the next number of the following sequence.
2,9,17,29,40,53,60,78,......

• 85-I got this answer in a very strange manner
  2 9 17 29 40 53 60 78
  +7 +8 +12 +11 +13 +7 +18 +7
  +1 +4 -1 +2 -6 +11 -11
  see the above sequence +1 +4 -1 +2 -6 ,,,add them up ==0
  remaining is 11 so u need to have a -11 to get 0, so after +18 u need to get +7
  eventually 78+7==85
• 10 years agoHelpfull: Yes(1) No(0)