Elance Exams Answers PDF file

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Download PDF file of elance Zoho Creator Exam Answers
elance-zoho-creator-exam.pdf

Suppose you have a collection foo with an index created using the statement db.foo.ensureIndex({a:1, b:-1, c:1}). Which of the following queries could use the index

db.foo.find({c:1, b:1})
db.foo.find({c:1})
db.foo.find({b:1})
db.foo.find({a:1, b:1})
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