Basic Math Examples

Evaluate (18!)/(10!)
18!10!18!10!
Step 1
Rewrite 18!18! as 181716151413121110!181716151413121110!.
181716151413121110!10!181716151413121110!10!
Step 2
Cancel the common factor of 10!10!.
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Step 2.1
Cancel the common factor.
181716151413121110!10!
Step 2.2
Divide 1817161514131211 by 1.
1817161514131211
1817161514131211
Step 3
Multiply 1817161514131211.
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Step 3.1
Multiply 18 by 17.
306161514131211
Step 3.2
Multiply 306 by 16.
48961514131211
Step 3.3
Multiply 4896 by 15.
7344014131211
Step 3.4
Multiply 73440 by 14.
1028160131211
Step 3.5
Multiply 1028160 by 13.
133660801211
Step 3.6
Multiply 13366080 by 12.
16039296011
Step 3.7
Multiply 160392960 by 11.
1764322560
1764322560
 [x2  12  π  xdx ]