if the number of different cards of different colours thomas has are in AP. If he has cards of 7 different colours in order of VIBGYOR such that the third colour is for times the fist colour and the sixth colour is 17 then find the number of fifth colour cards

• ans is 14
  2,5,8,11,14,17,21
  difference=3
• 9 years agoHelpfull: Yes(0) No(1)