19 26 40 68 124 (?)
(1) 246
(2) 238
(3) 236
(4) 256
(5) None of these

• 19+7x1=26
  26+7x2=40
  40+7x(2x2)=68
  68+7x(2x2x2)=124
  124+7x(2x2x2x2)=236
  
• 11 years agoHelpfull: Yes(2) No(0)
• (3) 236 19*2-12=26.......124*2-12=236
• 8 years agoHelpfull: Yes(0) No(0)
• 19 +7=26
  26+14=40
  40+28=68
  68+56=124
  124+112+236
• 7 years agoHelpfull: Yes(0) No(0)