Best Guess · Puzzle #14 · Tuesday, October 13
Best Guess: the answers
Four questions, each with one true number. Here they are with their answers, how to reason each one out, and where the number comes from. Play today's Best Guess.
1. How many US passports (books and cards) did the State Department issue in fiscal year 2025?
The answer: about 27.3 million. It was the most passports issued in a single year on record, 11.6% more than the year before.
Napkin math - 330Mpeople in the US
- ×0.5of them hold a passport
- ÷10years a passport lasts
≈16.5Mpassports
Source: USAFacts (citing the US State Department), How many US passports are issued each year?
2. How many boxes of Kraft Mac & Cheese are sold every day?
The answer: about 1 million. Kraft Heinz says the blue box has uniquely shaped American history.
Napkin math - 130Mhouseholds in the US
- ×3boxes each a year
- ÷365days a year
≈1.07Mboxes
3. How many loads of laundry does the average American family wash in a year?
The answer: about 300 loads. An ENERGY STAR washer uses about 14 gallons a load, against about 20 for a standard machine.
Napkin math - 6loads a week
- ×52weeks a year
≈312loads
Source: ENERGY STAR (U.S. EPA and Department of Energy), Clothes Washers
4. How many miles did all the finishers of the 2025 New York City Marathon run, combined?
The answer: about 1.55 million. Its 59,226 finishers made it the largest marathon ever, topping the 2024 race's record.
Napkin math - 50krunners in the biggest marathon
- ×26miles each
≈1.3Mmiles
Source: ABC7 New York, 2025 TCS NYC Marathon: New York Road Runners breaks record with 59,226 finishers