Challenge Problem: Single Value in an Array of Integers

MongoDB University M001: MongoDB Basics
#1

Why cant below be answer of above problem.

{$and : [{results:{$elemMatch:{$gte:70}}},{results:{$elemMatch:{$lt:80}}}]}

#2

because { results : [ 69 , 80 ] }

#3

Hi @Pratiyush_Singh,

Please review the syntax of elemMatch operator.

Your query is basically equivalent to this :

{$and : [ {results:{$gte:70}} , {results:{$lt:80}} ]}

I don’t think this is what you want to do here. Please go through the documentation and let me know if you are still having any questions.

~ Shubham