Express 550 and 1645 in the scale of 2, 5, 6, and 9.

2 answers

2+5+6+9 = 22
550/22 = 25, so multiply all the values by 25.

1645 done that way will give fractional values.
Ahh I see you meant base, not scale.
550 = 10001001102
550 = 6719

what do you get for the others?