Examlex
Use the Gauss-Jordan method to solve the system of equations. If the system has infinitely many solutions, let the last variable be the arbitrary variable.
State Lottery
A government-run gambling game in which participants buy tickets with numbered selections, hoping their numbers match the randomly drawn numbers for cash prizes.
Addition Rule
A fundamental principle in probability theory that calculates the probability of either of two mutually exclusive events occurring.
Mutually Exclusive
Events or conditions that cannot occur at the same time, highlighting a clear distinction without overlap.
Addition Rule
A principle in probability and statistics that calculates the likelihood of any of multiple mutually exclusive events occurring.
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