_ _ _ _ 7 _ _ _ X _ _ _ 2 _ _ _ .

This is credit card number where the total of 3 consecutive digits is 13. Find the value of X.

• ----7---x---2---
  assume 7abcXdef2
  7+a+b=a+b+c
  so c=7
  simillarly d=2
  since c+x+d=13
  so x=13-c-d
  =13-7-2
  =4
• 12 years agoHelpfull: Yes(51) No(4)
• ANS ...4
  2 7 4 2 (7) 4 2 7 (4) 2 7 4 (2) 7 4 2
  
• 12 years agoHelpfull: Yes(4) No(0)
• ans.4 i think
• 12 years agoHelpfull: Yes(3) No(1)
• x is 4..as consecutive digit sum is 13 as 2 7 4 2 7 4 2 7 4 2 7 4 2 7 4 2
• 12 years agoHelpfull: Yes(1) No(0)
• x wilol be 4
• 12 years agoHelpfull: Yes(0) No(0)