How do you multiple 6 times 5 in base 7?

Answer 1

in base 7 your numbers would go

1 2 3 4 5 6 10 6 * 1 = 6

11 12 13 14 15 16 20 6 * 2 = 15

21 22 23 24 24

31 32 33 33

41 42 42

51

61

100

Therefore in base 7, 6 times 5 is 42

You can check your answer by casting out sixes.