Write a numeric range question

A numeric question with a range answer accepts any value inside a closed interval. Useful for measurements, approximations, and any case where exact equality is too strict.

The basics

Two variants combine on a single answer line:

#### Quiz
* (NM) "Pick a value between 0 and 10."
  + [0.0, 10.0]   (Correct.)
#### End Quiz

The + [min, max] line is the correct range — both endpoints are inclusive. Any number from 0.0 through 10.0 is graded right.

Add tolerance bands and a default

You can chain multiple range answers, mixing + (correct) and - (incorrect) entries with feedback. A bare - (...) line is the catch-all for anything not matched by another answer:

#### Quiz
* (NM) "Speed of light in m/s, to 3 sig. figs.?" [3]
  + <3.00e8>            (Correct!)
  - [2.50e8, 2.99e8]    (A little low — units?)
  - [3.01e8, 3.50e8]    (A little high — double-check.)
  - (Not even close.)
#### End Quiz

The [3] after the question is the precision marker: the student’s input is rounded to 3 significant figures before comparison. Without [N], exact equality is required for value answers; ranges always compare on the raw value.

Combining with points

Range questions accept the {N} per-question points marker like any other:

#### Quiz
* (NM) {2} "Pick a value between 0 and 10."
  + [0.0, 10.0]
#### End Quiz

The whole question is worth 2 points; partial credit within a single question is not awarded. See Graded Quizzes for how cell-level scores roll up.

Common pitfalls

• Negative ranges: [-1, 1] is a valid syntax — the parser splits on the first comma, so the leading - is part of the number, not an answer-line prefix.

• Single-value match plus a range on the same answer line is a ParseError. Use separate answer lines.

• Open intervals are not supported. Both endpoints are inclusive; if you need an exclusive bound, narrow the range by one ULP or use a separate - [..., bound] band.