Calculate 243(_{six}) – 243(_{five}) expressing your answer in base 10
-
A.
0 -
B.
1 -
C.
26 -
D.
46
Correct Answer: Option C
Explanation
Since they are of different base, convert to base 10
243(_{six}) = (2 x 62) + (4 x 61) + (3 x 60)
= 72 + 24 + 3 = 99 base 10
243(_{six}) = 2 x 52 + 4 x 51 +3 x 50
50 + 20 + 3 = 73 base 10
Subtracting them, 99 – 73
= 26
There is an explanation video available below.