Challenge 2: Query with Comparison Operators — Possible Solution
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db.products.find({
  price: { $gte: 20 },
  category: { $in: ["electronics", "home"] }
})

WHY THIS WORKS AS AN ANSWER
------------------------------
Two separate conditions need to both hold true at once ("priced 20 or
more" AND "in either category"), which is exactly what putting both
fields into the same query object achieves — per the chapter's
implicit-AND rule, multiple fields in one query object are ANDed
together automatically, with no explicit $and needed.

Within that, each individual condition uses the operator that matches
what it's actually asking:
  - price: { $gte: 20 } — "20 or more" specifically requires $gte
    (greater than OR EQUAL), not $gt, since a product priced at
    exactly 20 should be included.
  - category: { $in: [...] } — "either category" is exactly the kind
    of "matches any value in this list" condition $in is built for,
    rather than writing out an $or with two separate category
    conditions (which would work, but $in is the more direct fit for
    checking one field against multiple acceptable values).