The four digit number 2652 is such that any two consecutive digits from it make a multiple of 13. Another number N has this same property, is 100 digits long, and begins with 9. What is the last digit of N?

• last digit of N is 9.
  
  The number N will be
  
  9,139,139,139,139,139,139,139,139,139,139,139,139,139,139,139,139,.......139
  here 139 will appear 33 times.
  so 100th digit (1+3*33) will be 9.
• 11 years agoHelpfull: Yes(4) No(0)