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Four couples are going to the movie. Each row holds eight
seats. Betty and Jim don't want to sit next to Alice and
Tom. Alice and Tom don't want to sit next to Gertrude and
Bill. On the otherhand, Sally and Bob don't want to sit next
to Betty and Jim.
How can the couples arrange themselves in a row so that they
all sit where they would like?
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Answer / guest
From the given data, it can be inferred that:
(Sally & Bob) NOT (Betty & Jim) NOT (Alice & Tom) NOT
(Gertrude & Bill)
(A) NOT (B) means A and B can not seat next to each other.
Now, it is obvious that (Betty & Jim) and (Alice & Tom) will
occupy the corner seats as both of them can have only one
neighbour. Therefore,
(Gertrude & Bill) will seat next to (Betty & Jim)
(Sally & Bob) will seat next to (Gertrude & Bill)
(Alice & Tom) will seat next to (Sally & Bob)
Thus, there are two possible arrangements - a mirror images
of each other.
1. (Betty & Jim) - (Gertrude & Bill) - (Sally & Bob) -
(Alice & Tom)
2. (Alice & Tom) - (Sally & Bob) - (Gertrude & Bill) -
(Betty & Jim)
| Is This Answer Correct ? | 5 Yes | 0 No |
Answer / shalima
Betty and Jim - Gertrude and Bill - Sally and Bob - - Alice
and Tom
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / prerna
The Sitting arrangement may be:
Betty,Jim,Gertrude,Sally,Tom,Alice,Bob,Bill
| Is This Answer Correct ? | 0 Yes | 1 No |
All of the tickets for 2 music concerts, X and Y, were either purchased or given away, and the ratio of X tickets to Y was 2 to 1. Of the total number of X tickets and Y tickets, what percentage was purchased? 1) The total number of X tickets and Y tickets, is 240. 2) Of the X tickets, exactly 60% were purchased, and of the Y tickets, exactly 80% were purchased. a) if statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question. b) if statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question. c) if BOTH statements (1) and (2) TOGETHER are sufficient to answer the question asked, but NEITHER statement ALONE is sufficient. d) if EACH statement ALONE is sufficient to answer the question asked. e) if statements (1) and (2) TOGETHER are NOT sufficient to answer the question asked, and additional data specific to the problem are needed.
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