Ouery on placement of comma

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Ouery on placement of comma

by shobhitk » Sun Jun 22, 2014 12:13 am
Data collected from various sources indicate that each year, 2000 people will be struck by lightning, while approximately 30% of those struck will die.

Can anyone please help me explain the usage of ","(underlined) in the above sentence?
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by [email protected] » Sun Jun 22, 2014 1:33 am
Hi shobhitk,

The GMAT doesn't test punctuation very often. The exception is that in rare circumstances, a semi-colon might be used (and knowing how/when to use a semicolon is helpful in those scenarios). You'd be better served putting your efforts towards learning the major grammar rules that the GMAT tests, the various idioms that can show up on Test Day and the common patterns that appear in the answer choices.

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