Factorials
Factorials might sound complicated, but this math concept is actually deceptively simple. Even though it''s easy to feel daunted the first time you see an exclamation mark in a formula, there''s no reason to be alarmed. Let''s figure out how to deal with factorials.
What you need to know about factorials
All factorials are products of positive integers. Remember, integers are simple whole numbers -- not fractions. When you see a factorial, all you need to do is multiply natural, whole numbers from the chosen value down to 1.
Here are a few examples:
12! = 12*13*11*10*9*8*7*6*5*4*3*2*1 = 6227020800
1! = 1
And by definition:
As long as you know the previous factorial, you can calculate the next one easily. For example, we now know that
Factorials are useful if we want to calculate combinations and permutations. For example, there are
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Get more help with factorials
When you''re working with advanced math concepts like factorials, combinations, and permutations, studying alongside a private tutor can help you understand them, along with any related concepts that you''re struggling with. If you''re ready to take your math education to the next level, get in touch with Varsity Tutors today.
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