In base 7, a number is written only using the digits 0, 1, 2, .....6. The number 135 in base 7 is 1 x 72 + 3 x 7 + 5 = 75 in base 10. What is the sum of the base 7 numbers 1234 and 6543 in base 7.
A. 11101
B. 11110
C. 10111
D. 11011

Question

In base 7, a number is written only using the digits 0, 1, 2, .....6.  The number 135 in base 7 is 1 x 72 + 3 x 7 + 5 = 75 in base 10.  What is the sum of the base 7 numbers 1234 and 6543 in base 7. 
A. 11101
B. 11110
C. 10111
D. 11011

anonymous · Answer

just add them .... keep in mind that

7 = 10
8 = 11

so carry the 1

anonymous · Answer

i did not understood...

can you explain me....