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(711−1)(712−1)(713−1)⋯(7142−1)(7143−1)\left( \frac { 71 }{ 1 } -1 \right) \left( \frac { 71 }{ 2 } -1 \right) \left( \frac { 71 }{ 3 } -1 \right) \cdots \left( \frac { 71 }{ 42 } -1 \right) \left( \frac { 71 }{ 43 } -1 \right) (171−1)(271−1)(371−1)⋯(4271−1)(4371−1)
Which of the following is equal to the above value?
Notation: (MN) \binom MN (NM) denotes the binomial coefficient, (MN)=M!N!(M−N)! \binom MN = \frac{M!}{N!(M-N)!} (NM)=N!(M−N)!M!.
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