英文统计学题How many ways are there to select 11 countries in the United Nations to serve on a council if 1 is selected from a block of 53,2 are selected from a block of 62 and 8 are selected from the remaining 74 countries?
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![英文统计学题How many ways are there to select 11 countries in the United Nations to serve on a council if 1 is selected from a block of 53,2 are selected from a block of 62 and 8 are selected from the remaining 74 countries?](/uploads/image/z/5454340-52-0.jpg?t=%E8%8B%B1%E6%96%87%E7%BB%9F%E8%AE%A1%E5%AD%A6%E9%A2%98How+many+ways+are+there+to+select+11+countries+in+the+United+Nations+to+serve+on+a+council+if+1+is+selected+from+a+block+of+53%2C2+are+selected+from+a+block+of+62+and+8+are+selected+from+the+remaining+74+countries%3F)
英文统计学题How many ways are there to select 11 countries in the United Nations to serve on a council if 1 is selected from a block of 53,2 are selected from a block of 62 and 8 are selected from the remaining 74 countries?
英文统计学题
How many ways are there to select 11 countries in the United Nations to serve on a council if 1 is selected from a block of 53,2 are selected from a block of 62 and 8 are selected from the remaining 74 countries?
英文统计学题How many ways are there to select 11 countries in the United Nations to serve on a council if 1 is selected from a block of 53,2 are selected from a block of 62 and 8 are selected from the remaining 74 countries?
共有多少种可能从联合国中选11个国家组成一个委员会如果要从53个国家里选一个,62个国家里选2个,然后从剩下的74个国家里选8个?
一共有189个国家,选11个.用组合(combination):(n choose r) = n!/(n-r)!r!
也就是说共有(53 choose 1)*(62 choose 2)*(74 choose 8)种可能性,53C1 = 53,62C2=1891,74C8=15071474661,他们3个的乘积为1,510,508,404,949,403.