If \(12_{e} = X_{7}\), where e = 12, find X.
A
20
B
15
C
14
D
12
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
\(12_{12} = 1 \times 12^{1} + 2 \times 12^{0} = 12 + 2 = 14_{10}\)
7
14
7
2 rm 0
0 rm 2
\(\therefore 12_{e} = 20_{7}\)
Source: Myschool Past Questions Archive (Record #31495)