Possible answer types in learning and test quizzes.

This quiz illustrates various types of answers which a question can specify to be the correct answer or answer element (in a sequence).
In order to avoid this quiz being very long most questions will show more than one answer type. These are assembled in ordered sequences.

Only answers to be typed into entry fields are considered, not answers in the form of clicking of buttons common in multiple-choice quizzes.
Look into other QuizComposer examples for such answer types.

Notice the contents of the entry fields for question number or name.
Correct answers to be entered directly as numbers.
The correct answer to this question is specified as being
[ 123 ][ -45 ][ 3e-30 ][ -0.29e20 ][ 0.5 ][ 4.5 ].

Correct answers to be entered into the following fields could thus be:
123, -50+5, 0.30e-29, -2.9e19, 1/2 and -4,5 (notice a comma in the last number).
.
You could try to answer with other equivalent values.

It is important when requiring non-integer answers to consider that rounding is likely to occur when the typed number (or a mathematical expression for it) is converted to the computer representation of the same number. The number 0.1, for example, cannot be expressed correctly in a computer, but rather as 0.10000000000000001 (because computers use a binary representation, not a decimal representation). Similarly with 1/3 (which cannot be represented correctly as a decimal number either).

Consider express a correct answer as an interval, for example. See the next question.
Correct answers specified with number intervals.
The correct answer to this question is specified to be
[ 1.23+-0.005 ][ -1.235 < @ < -1.225 ][ 2 < @ < 3 or 5 <= @ < 8 ].
Correct answers in the entry fields below could therefore be:
1.231, -1.2345, 3*2-1.
.
Correct answers using words and word sequences.
The correct answer to this question has this specification
[ xYz ][ $123 ][ #12 ][ Cu2+(aq) ][ Cu(s) + Ag+(aq) ].
A correct answer in the entry fields below must contain the same character strings in the right order.



Notice that the character $ must precede the number to indicate that we have a character string since starting with a digit indicates that we have a number.
Abbreviation of character string.
The correct answer to this question is specified as
[ tues. ][ Sat. ]
A correct answer in the entry fields below might be tuesdi, Saterday
Approximate character string.
The correct answer to this question is specified as
[ ~^~Abcd ][ ~^ ~Abc def ][ ~^ .,~Ab.c d,e. ]
A correct answer in the entry fields below might be aBCd, abcdef, aBcde
Extremely flexible character string specification.
Extreme flexibility in specification of a correct character string answer can be achieved using regular expressions. Two simple examples are shown here just to warn you.
The correct answer to this question is specified as
[ ^(?i)Abc\.$ ][ ^x[Yy]\*z ].
A correct answer in the entry fields below might be:
aBc.
xy*z
Simple algebraic formulas.
The correct answer to this question is specified as
[ !qcmath -2*F ][ !qcmath 0 ][ !qcmath sqrt( b^2 - 4 * a * c ) ]
A strange, but correct answer might be each of the following lines inserted in its proper entry field:
F/(-1)*2
3*a-a-2*(a)
sqrt( c*a*(-4) + b*b )
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