exam
Maths Puzzle
Numerical Ability
In a round-robin tennis tournament, every player meets every other player exactly once. How many players can participate in a tournament of 45 matches?
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exam Other Question
you have $30 in change, consisting of quarters and dimes. Write an ineq1uality that shows the different number of coins.
2x + y - z = -5
x - 3y + 2z = 5
2x + 4y - 2z = -8
solve the following system of equations in three variables