GMAT Quantitative Reasoning Practice Test 6

Question : 95 of 100

Marks: +1, -0

Tower

X

is smaller than tower

Z

. Is tower

Y

bigger than tower

X

?
(1) Tower

Z

higher than tower

Y

.
(2) Tower

Y

is one of the tallest in the world.

Statement (1) BY ITSELF is sufficient to answer the question, but statement (2) by itself is not.
Statement (2) BY ITSELF is sufficient to answer the question, but statement (1) by itself is not.
Statements (1) and (2) TAKEN TOGETHER are sufficient to answer the question, even though NEITHER statement BY ITSELF is sufficient.
Either statement BY ITSELF is sufficient to answer the question.
Statements (1) and (2) TAKEN TOGETHER are NOT sufficient to answer the question, requiring more data pertaining to the problem.

Solution:

We can write the data that is given to us:

X< Z

.
From statement (1) we can learn that:

Y< Z

also, this is not enough.
From statement (2) we know that

Y

is very tall, one of the highest in the world, but

X

can still be higher. Therefore, more sufficient data is required to answer the question.

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