1. Basic structure
| Question type | Form | Structure example | Notes |
|---|
| Quantity "how many" | Nは いくつ ありますか／ですか | りんごは いくつ ありますか | No counter needed when the items are small and the unit is clear |
| Action with quantity | Nを いくつ Vましたか | パンを いくつ 買いましたか | Asks "how many ... did (you) ...?" |
| Asking age (polite) | おいくつですか | 失礼ですが、おいくつですか | More polite than 何歳ですか |
| Meaning "a few/some" (noun) | いくつかの N | いくつかの 問題 | Means "a few.../some..." |
2. Main meanings & detailed analysis
- いくつ asks about an unspecified quantity, commonly used for small items that can be counted directly.
- Can be used in place of 何＋counter in basic conversation; however, with specific counters (本、枚、冊…), 何＋counter is more natural.
- おいくつですか is a polite way to ask someone's age (especially for older people).
- いくつか (noun) means "a few, some".
3. Example sentences
- りんごはいくつありますか。
How many apples are there? - ケーキをいくつ食べましたか。
How many cakes did you eat? - みかんをいくつ買いましたか。
How many tangerines did you buy? - 失礼ですが、おいくつですか。
Excuse me, may I ask how old you are? - ここに箱がいくつありますか。
How many boxes are there here? - いくつかの質問があります。
I have a few questions.
4. Usage & nuances
- Friendly, neutral; when being polite or in sensitive contexts (asking age), use おいくつですか and add the softener 失礼ですが.
- If the unit needs to be specified precisely, use 何＋counter: ビンは何本ですか.
- In writing, いくつか has a gentle "a few" nuance without pinning down an exact number.
5. Comparisons, distinctions, and similar patterns
| Pattern | Used when | Difference | Short example |
|---|
| いくつ | Asking general quantity | No unit specified | 卵はいくつありますか。 |
| 何＋counter | Asking by unit | Specific about the type of unit | 卵は何個ですか。 |
| 何歳 | Asking age | Neutral | あなたは何歳ですか。 |
| おいくつ | Asking age politely | Honorific/polite | 失礼ですが、おいくつですか。 |
| いくら | Asking price | Completely different meaning | これはいくらですか。 |
6. Additional notes
- When the quantity is large/cannot be counted directly, switch to どのくらい/どれくらい: どのくらい買いましたか.
- Avoid asking age directly when unnecessary; if you must ask, use おいくつですか to be polite.
- In answers, use number＋counter or native numbers: 3つ／三つ (both Sino-Japanese and native Japanese are acceptable at N5).
7. Variations & set phrases
- いくつか（のN）: a few, some.
- ～をいくつください: Please give me a few ...
- 全部でいくつ: How many in total?
8. Common mistakes & JLPT traps
- Confused with いくら (price): × これはいくつですか → ○ これはいくらですか。
- Forgetting to use a counter when needed: × ペンはいくつですか (vague) → ○ ペンは何本ですか。
- Using いくつ to ask an adult's age without sufficient politeness; use おいくつですか／何歳ですか instead.
