Not able to do $ eleMatch operation

I was trying to attempt the quiz after the $eleMatch lecture. I wrote the query but i didn’t got output.
Then i saw the solution. I also wrote the solution query. Then also I didn’t got the output.
Please Help.

make sure you are connected to the right database for the question

did you write elemMatch with one or two “M”? With two ("$elemMatch") is the right spelling

OK got it i was writing “$eleMatch”.
Thank You so much