Bracket #35 — the answers
The five questions from November 3, 2026, with their answers, the track each ran on, and the bracket that would have scored 90 on it.
The answers
| # | Question | Answer | Track | A tenth of it, on the answer |
|---|---|---|---|---|
| 1 | How many keys are on a full-size US computer keyboard? | 104 | 50 to 200 | 96 to 112 |
| 2 | How fast does sound travel through air at sea level? | 767 miles per hour | 100 to 2,000 | 680 to 860 |
| 3 | What is 28 × 26? | 728 | 100 to 20,000, logarithmic | 560 to 950 |
| 4 | How tall is the Willis Tower in Chicago, to its roof? | 1,451 feet | 300 to 3,000 | 1,320 to 1,580 |
| 5 | How many neurons are in a human brain? | 86B | 1M to 1000T, logarithmic | 31B to 240B |
Question by question
A question scores 100 minus the bracket’s width as a percentage of the track, if the answer is inside it, and nothing if it is outside. The tenth-of-the-track bracket below is the one a confident player was aiming for.
- How many keys are on a full-size US computer keyboard? 104 — near the middle of its track. A bracket from 96 to 112 is a tenth of the track and scores 90; the whole track scores 0.
- How fast does sound travel through air at sea level? 767 miles per hour — near the middle of its track. A bracket from 680 to 860 is a tenth of the track and scores 90; the whole track scores 0.
- What is 28 × 26? 728 — near the middle of its track (a logarithmic track, so a tenth of it is a tenth of the powers of ten it spans). A bracket from 560 to 950 is a tenth of the track and scores 90; the whole track scores 0.
- How tall is the Willis Tower in Chicago, to its roof? 1,451 feet — near the middle of its track. A bracket from 1,320 to 1,580 is a tenth of the track and scores 90; the whole track scores 0.
- How many neurons are in a human brain? 86B — near the middle of its track (a logarithmic track, so a tenth of it is a tenth of the powers of ten it spans). A bracket from 31B to 240B is a tenth of the track and scores 90; the whole track scores 0.
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About Bracket
Bracket is Noggin’s estimation puzzle, on the second shelf: five questions a day with a number for an answer, bracketed rather than named, outside the daily line-up. How to play Bracket, or play today’s.