GMAT Quantitative Reasoning Practice Test 5

Question : 35 of 100

Marks: +1, -0

A positive integer k is called “square-free” if it does not have a factor that is the square of an integer. Which of the following greatest square-free integer that is a factor of 4,200?

$105$
$168$
$210$
$420$
$1,050$

Validate

Solution:

210 = 2 × 3 × 5 × 7

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