Numbers Game Help
Help Level 4a
Sigma Summation and Factorial
Learn to Play the Numbers Game Level Four
Select the Play
button at any time to
start or restart the game. Play
resets
your score for this level.
The game's over when either the timer runs
out or you've answered every question.
Post Your Score
When the game's over
enter a user name and password.
Select the Post Score
button
to see how your score compares to others online.
Each level starts over if you return and
tap the Play
button.
To accumulate the highest score complete a level,
then start another level.
Game Play
Questions display below the landscape. For each correct answer your score increases by forty points. Tap a digit in the background, then select a Sigma Summation Σ or factorial ! symbol. Sum a series of integers, sum a series of integers squared, or find the product of a series of integers.
Zoom In or Zoom Out
Select the magnifying glass icons below the cloudscape to zoom in and out.
Sigma Σ Sum Integers
The graphic on the button below, represents summation of a series of numbers or Sigma Σ. Summation of a series of numbers involves simple addition. Start with the lower limit. End with the upper limit. Add every digit from the lower to the upper limit.
For details regarding summation see Sum a Series.
For details regarding how to sum the square of a series see see Square a Series.
n! Factorial Symbol
The factorial symbol, on the button below, multiplies a series of numbers.
For example the factorial of 3 equals 6
because 1 * 2 * 3 = 6.
For details with factorials please see see Help with Factorials.
