Q: 118 (CAPF/2017)

Consider the following number : n = [(6374)1793x(625)3]7x(313)49]
Which one of the following is the digit at the unit place of n ?
question_subject: 
Maths
question_year: 
2017
question_exam: 
CAPF
stats: 
0,16,8,16,0,0,8