find number of ways a batman can score a double century using 4's and 6's?

• firstly 200 is divided by 4 so no of
  4's = 50 , 6's = 0
  again
  4's = 47 , 6's = 2
  4's = 44 , 6's = 4
  .....
  4'S = 2 , 6'S = 32
  
  SO According to AP
  a+(n-1)d = 32 (for 6's)
  so 0+(n-1)*2 = 32
  n = 17
  
  ans 17!!!!
  
• 10 years agoHelpfull: Yes(1) No(0)
• 17-1=16 ways
• 10 years agoHelpfull: Yes(0) No(6)