i am a common multiple of 6 and 7; the sum of my two digits is 12

Sagot :

The answer is 84.    These digits if you add, 8 + 4 = 12.

List all the multiples of 6 and 7:
6 = 6, 12, 18, 24,..60, 72, 78, 84, 90
7, 7, 14, 21, 28,..., 77, 84, 91


first list all the multiples of 6 and 7
6=6,12,18,24,30.........78,84,90.......
7=7,14,21,28............70,77.84,91
 then the answer is 84