SOLUTION: {{{20!/(2!18!)}}}

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Question 153917: 20%21%2F%282%2118%21%29
Found 2 solutions by checkley77, Edwin McCravy:
Answer by checkley77(12569) About Me  (Show Source):
You can put this solution on YOUR website!
20!/2!18!
2.4329*10^18/2*6.4024*10^15
2.4329*10^18/1.2805*10^16=190 answer.

Answer by Edwin McCravy(6939) About Me  (Show Source):
You can put this solution on YOUR website!
Edwin's solution:

20%21%2F%282%2118%21%29+=+%2820%2A19%2A18%2A17%2A16%2A15%2A14%2A13%2A12%2A11%2A10%2A9%2A8%2A7%2A6%2A5%2A4%2A3%2A2%2A1%29%2F%28%282%2A1%29%2818%2A17%2A16%2A15%2A14%2A13%2A12%2A11%2A10%2A9%2A8%2A7%2A6%2A5%2A4%2A3%2A2%2A1%29%29 =

20%21%2F%282%2118%21%29+=+%2820%2A19%2Across%2818%2A17%2A16%2A15%2A14%2A13%2A12%2A11%2A10%2A9%2A8%2A7%2A6%2A5%2A4%2A3%2A2%2A1%29%29%2F%28%282%2A1%29%28cross%2818%2A17%2A16%2A15%2A14%2A13%2A12%2A11%2A10%2A9%2A8%2A7%2A6%2A5%2A4%2A3%2A2%2A1%29%29%29

20%21%2F%282%2118%21%29+=+%2820%2A19%29%2F%282%2A1%29+=+380%2F2+=+190

Edwin