Mobius question types listed with examples:
https://digitaled.com/support/help/Content/AUTHORING-INSTRUCTORS/Question%20types.htm

Mobius "how-to" videos, including how to make 15 different question types:
https://www.digitaled.com/support/training

Mobius algorithm functions:
https://www.digitaled.com/support/legacy/help/html/MobiusInstructor/ch09s18.html

More Mobius lesson and question examples: open.uwaterloo.ca

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Title your mobius question with your name and a phrase describing the question
E.g. paulkates numeric sum question

# Q1
# algorithm numeric question type with exact answer
# illustrates number variables and making random numbers 
# question text:

What is the sum of $a + $b? [numeric answer box]

# algorithm section
$a = rint(10); # random 0..9
$b = rint(10,20); # random number 10..19
$ans = $a + $b;  # answer is sum a+b

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# Q2
# algorithm string multiple-choice question type
# illustrates 5-option multiple-choice question using algorithmic strings
# and functions rint, switch (pick from list), mathml (pretty looking math)
# question text:

Two lines are parallel when they have
* the same y-intercept
* the same x-intercept
* equal slopes
* all of the above
* none of the above

# algorithm section
$alt1 = switch(rint(2),"the same x-intercept", "two or more intersection points");
$alt2 = switch(rint(2),"the same y-intercept", "an intersection point at the origin");
$alt1_prettyX = switch(rint(2),strcat("the same ", mathml("x"), "-intercept"), "two or more intersection points");

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# Q3
# multi-part question with algorithm plot multiple-choice question type
# and math formula question type
#
# illustrates 4-option multiple-choice question using algorithmic plots
# and functions 
- range(2,9,1) is integer 2..9 (step =1)
- frac(a,b) is  a/b in lowest terms
- maple("$r^2") to keep $r^2 as fraction not floating pt number
- plotmaple command with plots library call to pointplot function
# question text:
Consider the following sequence: 

    $t1ML, $t2ML, $t3ML, $t4ML, $t5ML, ...

(a) Which of the following graphs best represent the above sequence?
 
$plot1
$plot2
$plot3
$plot4

(b) Determine an expression for the general term an if the sequence
begins at n=0.

an= [math formula question answer box]

# algorithm section
$r1 = range(2,9,1);

$r = frac(1,$r1);
$rML = mathml("$r");
$t1 = 1;
$t2 = maple("$r");
$t3 = maple("$r^2");
$t4 = maple("$r^3");
$t5 = maple("$r^4");
$t1ML = mathml("$t1");
$t2ML = mathml("$t2");
$t3ML = mathml("$t3");
$t4ML = mathml("$t4");
$t5ML = mathml("$t5");


$plot1 = plotmaple("
  with(plots);
	 pointplot([[1,$t1], [2,$t2], [3,$t3],[4,$t4], [5,$t5]],colour = blue, gridlines = true, symbolsize = 10,symbol = solidcircle, size=[300,300]);
");
$plot2 = plotmaple("
  with(plots);
	 pointplot([[$t1,1], [$t2,2], [$t3,3],[$t4,4], [$t5,5]],colour = blue, gridlines = true, symbolsize = 10,symbol = solidcircle, size=[300,300]);
");
$plot3 = plotmaple("plot($r1 * exp(-2.197*x),x=0..1,y=0..5,colour = blue, gridlines = true, size=[300,300])");
$plot4 = plotmaple("
  with(plots);
	 pointplot([[1,1], [2,2], [3,3],[4,4], [5,5]],colour = blue, gridlines = true, symbolsize = 10,symbol = solidcircle, size=[300,300]);
");

$ansb = $r^n;

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# Q4
# multi-part question - algorithm number variables with numeric question type
# and math formula question type
#
# illustrates 
# answers: 2 simple formulas n and n-1, 3 numbers from question text and
# number with tolerance +/- 1 from formula
# - chicken image changes

# question text:
A poultry farmer has $c chickens in a barn. The hens lay eggs such that the population increases by $p% each month and the farmer harvests $h chickens per month. Denote the population after n months by Pn. Determine a recursive formula for the poultry population of the form Px=aPy+b .

x= [math formula answer box] 
y= [math formula answer box]
a= [numeric question answer box]
b= [numeric question answer box]
P0= [numeric question answer box]

How many chickens are in the barn after 4 months? Answer to nearest whole number
[numeric question answer box]

# algorithm section
# $c = initial # chickens, $p = % increase per month in chickens
# $h = monthly harvest (reduction) in chickens
# $P1 = # chickens at end of 1 month, ... $P4 = # at end of 4th month

$c = range(500,5000,100);
$p = range(5,15);
$h = range(100,500,50);

$P1 = (1+$p/100)*$c - $h;
$P2 = (1+$p/100)*$P1 - $h;
$P3 = (1+$p/100)*$P2 - $h;
$P4 = (1+$p/100)*$P3 - $h;
#;
# For image, 4 possibilities;
#;
$Which=rint(4);