Sharp EL-531LH User Manual

22 Mastering the Calculator using the Sharp EL-531LH
Factorial rule
9. Using memory
To calculate the following it may be useful to use the memory key for each term:
Example:
The number of ways of arranging n items in order is known as ‘factorial n’ which is
symbolised as n! where:
n! = n × (n – 1) × (n – 2) × ... × 3 × 2 × 1
916–()
2
16
-
---------------------
23 16–()
2
16
-------------------------
17 16–()
2
16
---------------------
----
++
these keys are for memory

Sharp EL-531LH Specifications

General

Brand	Sharp
Model	EL-531LH
Category	Calculator
Language	English