@@ -73,7 +73,7 @@
    "metadata": {},
    "source": [
     "### Exercise: get all books from 2010 or 2012 and with less than 200 pages\n",
-    "Use { $and: [ {field: value1}, {field: value2} ] } to express field == value1 AND field == value2 Hint: use Less Than {field: {$lt: value}}"
+    "Hint: combine the year condition with the pages condition, for example using { $and: [ { year: { $in: [2010, 2012] } }, { pages: { $lt: 200 } } ] } or a nested $or for the year values."
    ]
   },
   {
Original file line number	Diff line number	Diff line change
`@@ -73,7 +73,7 @@`
`73`	`73`	`"metadata": {},`
`74`	`74`	`"source": [`
`75`	`75`	`"### Exercise: get all books from 2010 or 2012 and with less than 200 pages\n",`
`76`		`- "Use { $and: [ {field: value1}, {field: value2} ] } to express field == value1 AND field == value2 Hint: use Less Than {field: {$lt: value}}"`
	`76`	`+ "Hint: combine the year condition with the pages condition, for example using { $and: [ { year: { $in: [2010, 2012] } }, { pages: { $lt: 200 } } ] } or a nested $or for the year values."`
`77`	`77`	`]`
`78`	`78`	`},`
`79`	`79`	`{`