1 4 n mod 5Find a value of n in the set 0 1 2 3 4 that will

1 4 × n (mod 5)Find a value of n in the set {0, 1, 2, 3, 4} that will make

Find a value of n in the set {0, 1, 2, 3, 4} that will make the given congruence true.

1 4 × n (mod 5)

n=

Solution

n=4

1=4*4(mod5)

1-16=-15 is divisible by 5

Hence n=4