How many 6's are there in the following number series which are immediately followed by 7 but not immediately preceded by 3?
2 6 7 3 4 6 7 2 3 6 7 6 5 2 7 6 3 9 8 6 7 1 3 6 5
1) Two
2) Three
3) Four
4) Five
5) None of these

• 4
  bcoz...4 6 are immediately followed by 7
• 13 years agoHelpfull: Yes(0) No(9)
• 3(673,672,671)
  
• 9 years agoHelpfull: Yes(0) No(0)