Examlex
Set up a generating function and use it to find the number of ways in which nine identical blocks can be given to four children, if each child gets at least two blocks.
Reinforce
To strengthen or support, often with additional material or information.
13th Amendment
An amendment to the United States Constitution, adopted in 1865, that abolished slavery and involuntary servitude, except as punishment for a crime.
18th Amendment
An amendment to the United States Constitution that established the prohibition of alcohol, making the production, transport, and sale of alcohol illegal from 1920 until its repeal in 1933.
14th Amendment
An amendment to the US Constitution that grants citizenship to all persons born or naturalized in the United States and prohibits states from denying any person life, liberty, or property without due process of law.
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