What is the next number in the series?
1, 2, 8, 9, 15, 16, ?
a)22
b)20
c)17
d)18
e)19

• the next number in the series?
  1, 2, 8, 9, 15, 16, ? will be 22
  as series is
  
  1, 2, 8, 9, 15, 16, 22,23,29,30
  where
  
  two series mixed together are 1,8,15,22,29 and 2,9,16,23,30
• 13 years agoHelpfull: Yes(0) No(0)
• 22 is the answer
  if we take the alternate digits
  1,8,15....difference is 7 so by adding 15+7=22
• 10 years agoHelpfull: Yes(0) No(0)