21 21 22 23 24 22 22 23 24 25 ?
options a.21 b.23 c.24d.22

• 23
  21 21 22 23 24 22 22 23 24 25 ?
  
  First terms are
  21 21 22 23 24
  then
  22 22 23 24 25
  next terms will be
  23 23 24 25 26
  
  so ? should be replaced by 23.
  
• 13 years agoHelpfull: Yes(13) No(0)
• 23
  alternative series:
  21:21,22,23,24
  after 22:22,23,24,25
  so after 21,22,23
  so ans is 23
• 13 years agoHelpfull: Yes(2) No(1)
• here in the question after the number 21 repeating twice the next 3 concecutive numbers are written in the same way series is continued so the answer is 23.
• 13 years agoHelpfull: Yes(1) No(1)
• 1st sequence
  21
  21+0=21
  21+1=22
  22+1=23
  23+1=24
  2nd sequence
  22
  22+0=22
  22+1=23
  23+1=24
  24+1=25
  3rd sequence
  23
• 8 years agoHelpfull: Yes(0) No(0)