GMAT Practice Question Set #48 (Question 142-144)

Problem Solving Question #142: Units Digit of Exponents  
Time 0 0 : 0 0 : 0 0

What is the units digit of the expression `14^7 -18^4` ?

(A)

0

(B)

3

(C)

4

(D)

6

(E)

8

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