Factorial: x!/y!

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Christian Lawson-Perfect

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Ready to use

9 years, 5 months ago

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Christian Lawson-Perfect 9 years, 5 months ago

Saved a checkpoint:

Wrote a description.

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Christian Lawson-Perfect 9 years, 5 months ago

Gave some feedback: Ready to use

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Christian Lawson-Perfect 9 years, 5 months ago

Saved a checkpoint:

Fixed it so the first fraction always has a bigger numerator, and the second one always has a bigger denominator.
Wrote some advice.

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Hayley Moore 9 years, 8 months ago

Created this.

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Question statement

Simplify the following fractions.

Give any introductory information the student needs.

			Name	Type	Generated Value

a1	integer	13
a2	integer	10
b1	integer	9
b2	integer	11

Automatically regenerate variables?

Name

Data type

Value

xxxxxxxxxx
 
a2+random(2..4)

JME function reference

Description

Describe what this variable represents, and list any assumptions made about its value.

Can an exam override the value of this variable?

Generated value: `integer`

← Depends on:

This variable doesn't seem to be used anywhere.

Parts

Part a) Gap-fill
1. Gap Number entry
  Add
Part b) Gap-fill
1. Gap Number entry
  Add

Gap-fill

Ask the student a question, and give any hints about how they should answer this part.

$\dfrac{\var{a1}!}{\var{a2}!} =$ Unnamed gap

Advice

a)

$\frac{\var{a1}!}{\var{a2}!} = \frac{\var{show_factorial(1,a1)}}{\var{show_factorial(1,a2)}} = \var{show_factorial(a2+1,a1)} = \var{fact(a1)/fact(a2)}$

b)

$\frac{\var{b1}!}{\var{b2}!} = \frac{\var{show_factorial(1,b1)}}{\var{show_factorial(1,b2)}} = \frac{1}{\var{show_factorial(b1+1,b2)}} = \frac{1}{\var{fact(b2)/fact(b1)}}$

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Part	Test	Passed?
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet
Gap-fill
Gap-fill		Hasn't run yet
Number entry
Number entry		Hasn't run yet

This question is used in the following exam:

Factorials by Hayley Moore in Hayley's workspace.

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Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

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Checkpoint description

Christian Lawson-Perfect 9 years, 5 months ago

Christian Lawson-Perfect 9 years, 5 months ago

Christian Lawson-Perfect 9 years, 5 months ago

Hayley Moore 9 years, 8 months ago

Error in variable testing condition

Error

Warning

Generated value: `integer`

Parts

Gap-fill

a)

b)

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Factorial: x!/y!

Metadata

Taxonomy: mathcentre

Taxonomy: Kind of activity

Taxonomy: Context

Contributors

Feedback

History

Comment

Checkpoint description

Christian Lawson-Perfect 9 years, 5 months ago

Christian Lawson-Perfect 9 years, 5 months ago

Christian Lawson-Perfect 9 years, 5 months ago

Hayley Moore 9 years, 8 months ago

Error in variable testing condition

Error

Warning

Generated value: integer

Parts

Gap-fill

a)

b)

Generated value: `integer`