LSAT的逻辑组题（一）a

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Time-35 minutes

  K5 `' L4 e; Z" S5 \4 B% U  W23 Questions
" G$ T0 U+ b5 W* X$ y. [4 I7 BQuestoins 1-6
" C; X3 h# I( C7 `6 }A man buys three outfits-X, Y, and Z-each of which consists of two articles
$ b9 H! ?* w. H3 d2 hof clothing.
8 j% O; T' x2 S! aEach of the articles of clothing is either brown gray or navy.
# O2 g5 t) d6 D' _% |  |At least one of the outfits is made up of two articles different in color  
: H9 B8 e( _3 x6 A; w! f& |5 ~from one another.  
No more than two of the outfits contain the same combination of colors.
" t# h* G/ k" v6 u9 f3 m. T( QOutfit X contains at least one navy article of clothing.
5 w5 j4 T$ S: wOutfit X contains at least one brown article of clothing and does not  
contain a gray article.
9 ?. {, x/ B0 \2 L. f# R1. Which one of the following can be the colors of the man’s outfits?  
' J. U% Y- c4 O6 y* E) d7 V* n(A) X: gray and navy; Y: brown and gray; Z: gray and gray
- |$ G8 ?1 w, ?) e(B) X: brown and gray; Y: brown and navy; Z: gray and gray
(C) X: navy and navy; Y: brown and brown; Z: brown and navy
) C- J) D! Q: }% J* U) W(D) X: brown and navy; Y: brown and navy; Z: brown and navy
(E) X: navy and navy; Y: brown and brown; Z: navy and navy
2. If outfits X and Y each consist of one brown article and one navy article
of clothing, what combinations for outfit Z?
(A) 2
(B) 3
(C) 4
  m6 c- w. u2 ]" s  L(D) 5
(E) 6
3. If outfit Z does not contain two brown items of clothing, what is the  
% W/ j  `, y9 S( q5 ?maximum number of items of clothing in the three outfits that can be navy?
(A) 1
3 [/ a- w+ f- y3 M; W; a# S& N(B) 2
) E+ F) C3 r/ H/ l) s! V1 K(C) 3
& k0 e9 ~! J9 _(D) 4
(E) 5
% R, q  |4 [0 X$ T) r4. If outfit Y consists of two brown articles of clothing and outfit Z consists
of two navy items, what is the total number of possible color combinations for
$ U7 e, D( D/ K" k1 C2 houtfit X?
(A) 1
% e! s* m& ~# `+ l1 T4 a. ^/ Y(B) 2
(C) 3
(D) 4
9 |; V9 n0 c  c) x$ j(E) 5
5. Which one of the following color combinations for outfit Z would be  
9 F, R3 Y  N! i1 p+ i! ~acceptable under any of the acceptable color combinations for outfits X and Y?
7 @' n# B1 L  L% k. D7 p, ~; T(A) gray and gray
(B) brown and gray
(C) brown and brown
(D) brown and navy
+ a7 ^- s" Q3 O7 R7 [(E) navy and navy
8 N3 F; C+ I3 {; ^, i9 B9 k8 m8 b6. If no two outfits contain the same color combination but each contains at
least one navy item, which one of the following is a complete and accurate
* q* e3 N3 D5 a$ E& \) Ilist of the possible combinations for outfit X?
+ Z) T) @( K) _4 r, i! @/ r(A) gray and navy
(B) brown and navy
(C) navy and navy
4 j" `0 J, b: r(D) gray and navy; brown and navy
  O. ~( B7 k+ u$ u: Z5 m  q! S(E) gray and navy; navy and navy
1 {$ ^$ {- F  S+ D, P- l# O
) j; U2 n' D( ~8 W7 T9 tGO ON TO THE NEXT PAGE
% s( T# H. R" M& u3 ?& T* e$ yQuestion 7-11
Five seats on a train are arranged in two rows that face each other. The  
9 }8 z  ]; k* _* {# [& @' nseats in row 1 are seat 1 and seat 2. The s  
- {" N* u: C) W' x. b8 weats in row 2 are seat 3, seat 4,
and seat 5 in that order. Seat 1 is directly across from seat 3. Seat 2 is  
- Y) @) E0 u5 ^+ r* D9 rdirectly across from seat 4. Seat 5 is not directly across from any other seat.
Three women-, Betty, and Carol-and two men-David Edmund-each must be seated in
one of me five seats, one person to a seat.
9 t. l$ Y1 y) cBetty sits in seat 4.
1 T6 H/ W# T  V  U$ }! s: Q- eCarol sits next to neither Betty nor David.
& D. w9 `5 p: l0 m! y/ P3 p2 D0 H3 VAlice does not sit directly across from Carol.
7. If Edmund sits directly across from Betty, which one of the following must
8 \# c  n/ F+ i% C) c) F' U& Y8 d6 Ube true?
(A) Alice does not sit directly across from anyone.
(B) Alice sits directly across from David.
# T0 B- c+ e( G' C9 g8 K* {# |. O! j(C) Alice sits next to Edmund.
(D) David sits next to Alice.
(E) David sits next to Edmund.
) o3 a7 o: f5 H  N2 \! R3 c8. If Edmund does not sit directly across from anyone, which one of the
- I9 v2 ?/ f- |8 R% r9 Z7 |# pfollowing is a complete and accurate list of those (other than Edmund) who  
cannot sit in seat 1?
(A) Betty
(B) Carol
! F3 y% J$ Z: Q(C) David
5 q2 C( ~, s9 W(D) Betty and Carol
4 B/ i8 F. \7 s9 v+ ?(E) Betty and David
3 S# R* L* h( j. H9 V! Z# R( ~" r9. If none of the five passengers sits directly across from a passenger of the
$ n& L, x8 g1 U  Esame sex, how many seating arrangements of the five passengers are possible?
(A) exactly 0
(B) exactly 1
(C) exactly 2
! }! t9 D3 f1 ~; F9 z3 j(D) exactly 3
5 n  f* K& f; T4 W) @: i0 N$ O(E) exactly 4
10. How many of the seats could be the one Alice selects as her seat?
(A) 1 only  
$ I! z+ y# l3 ?( z(B) 2 only
(C) 3 only
(D) 4 only
(E) 5 only
11. How many different seating arrangements of the passengers might there be
for row 2?
2 q6 x( @% u" R% S, T(A) 2
(B) 3
% u- J4 Q. E3 W  j8 h5 w(C) 4
(D) 5
(E) 6