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[" 16.The coefficient of "a^(8)b^(10)" i...

[" 16.The coefficient of "a^(8)b^(10)" in the expansion of "(a+b)^(18)" is "],[[" (a) "^(18)C_(8)," (b) "^(18)P_(10)," (d) none of these "],[" (c) "2^(18)," (d) none "]]

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