If 20(mod 9) is equivalent to y(mod 6), find y.
A
1
B
2
C
3
D
4
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
First, reduce 20(mod 9) to its simplest form in mod 9; 9 x 2 + 2 = 2(mod 9)
If 2(mod 9) y(mod 6), then y = 2 by comparism
Source: Myschool Past Questions Archive (Record #46209)