Questions 18-22
% |& r% B5 H( h7 ? O9 H0 t3 ] M, N, O, P, Q, and R are two sets of triplets, not necessarily in the order given. None of the six is married to a sibling or to someone of the same sex:
$ g; v- Q/ \7 \4 ~- X, T Four of the six are male and two are female.0 C; t% P; g- D& g: I7 @
Neither set of triplets contains three siblings of the same sex.* Z7 \+ O% P1 H$ f5 G7 ?9 ~
M and P are married to each other.5 I: A* d+ j* o( |
N is Q's only brother.
* L7 {, b4 \/ q% K 18. Who CANNOT be sister and brother?
. b$ X2 N, N8 u* @/ i2 @ (A) M and Q, x; W1 o2 Q0 n' P
(B) O and R
1 d& }5 v+ ]! z; u) g8 e (C) P and Q: F# ]8 ?/ g. t& z& e [" d
(D) P and R
1 e# \3 ~; ]/ J2 x* ?2 x9 v- X (E) R and Q
8 s2 \# T9 ?/ f7 k/ W, g' C) c- C 19. R must be a female if, d* [/ `4 K& U! u) L
(A) M and Q are siblings! t9 F5 k+ e, p( c/ ^
(B) O and R are siblings/ y6 e9 G+ Q6 W1 y8 a: ~4 l
(C) P and Q are siblings# \0 Q% A2 J4 ? |3 ]8 S% r1 p
(D) O is P's sister-in-law3 E. h3 |) g5 v P1 S( |; K( ~
(E) O is P's brother-in-law) \* V3 l- Z7 n& ]; k3 s
20. Which of the following statements must be FALSE?
2 P) X# X0 I( l% C (A) O is P's sister-in-law.
: o7 T# a: w: \, O (B) Q is P's sister-in-law.% n3 x2 ~# [, G+ }/ f! Q
(C) N is P's brother-in-law.
+ i6 t& L& ?; J" |$ ^, ` (D) O is P's brother-in-law.6 W9 v2 i( N- m0 w! b& o6 G2 h& @
(E) Q is P's brother-in-law.
~2 r6 I5 {% X( N 21. If Q and R are married to each other, which of the following must be true?: E7 t+ y% ]$ D9 a( d3 r! @! G' V# M! A$ q
(A) O is a male.
$ P! R7 O' Z; ?$ ^6 w: ^0 t; h2 ^ (B) R is a male.
3 w8 P0 u+ A8 d$ H, h/ d. j1 I( s (C) M is a female., t( s' ?, A5 k4 r n D) }9 {
(D) N is a female.
+ y Q; r' z) o! h5 l9 A% q (E) p is a female. |