Science quiz
Count to 64 in hexadecimal
Hexadecimal counts in sixteens, with the letters A to F for ten to fifteen. Type the numbers 1 to 64 in base sixteen, in order.
- Format
- Type them all
- Items
- 64 answers
- Limit
- 4:00
- Level
- Medium
- Checked
- 2026.10.03
- Answers
- 64
- Time limit
- 4:00
- Order
- One at a time, no skipping
- Matching
- Case and accents ignored
- Answer each item in turn; the next appears when you get it right.
- Press Enter to check a guess.
- Pause whenever you like (Esc). The board hides while the clock is stopped.
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About this quiz
Hexadecimal is base sixteen. One hexadecimal digit stands for exactly four binary digits, which is why it is used for memory addresses and colour codes.
- 64 in hexadecimal is 40: four sixteens and no ones.
- The letters may be typed in capitals or small letters.
- FF, the largest two digit hexadecimal number, is 255.
More quizzes like this
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|---|---|---|---|---|---|
| 01 | Count to 32 in binary 1, 10, 11, 100: count from 1 to 32 in binary, typing each number in base two. A wrong number costs time but the count goes on. Science / Type them all / 32 answers | Science | Type them all | 32 | 2026.10.03 |
| 02 | Prime numbers under 100 There are 25 prime numbers below 100. Type them all, in any order, from 2 to 97. Press Enter for the ones that start a longer prime. Science / Type them all / 25 answers | Science | Type them all | 25 | 2026.10.03 |
| 03 | Minute maths: addition Forty addition questions and sixty seconds on the clock. Type each answer; the next question appears the moment you are right. No skipping. Science / Type them all / 40 answers | Science | Type them all | 40 | 2026.10.03 |