brazil-enem 2015 Q157

brazil-enem · Other · enem__day2 Permutations & Arrangements Linear Arrangement with Constraints
QUESTION 157
The number of ways to arrange 4 people in a row is
(A) 12
(B) 16
(C) 20
(D) 24
(E) 28
QUESTION 157

The number of ways to arrange 4 people in a row is

(A) 12

(B) 16

(C) 20

(D) 24

(E) 28