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MAA AMC
AMC 8
1991 AMC 8
17
17
Part of
1991 AMC 8
Problems
(1)
AJHSME 1991 Problem 17
Source:
6/24/2011
An auditorium with
20
20
20
rows of seats has
10
10
10
seats in the first row. Each successive row has one more seat than the previous row. If students taking an exam are permitted to sit in any row, but not next to another student in that row, then the maximum number of students that can be seated for an exam is
(A)
150
(B)
180
(C)
200
(D)
400
(E)
460
\text{(A)}\ 150 \qquad \text{(B)}\ 180 \qquad \text{(C)}\ 200 \qquad \text{(D)}\ 400 \qquad \text{(E)}\ 460
(A)
150
(B)
180
(C)
200
(D)
400
(E)
460