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Maths Puzzle
Numerical Ability
A baseball manager has 11 players of the same ability. How many 9 player starting lineups can he create?
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a^2+b^2=52 and a^2-b^2= 20 Solve for b
Ester drove to work in the morning at an average speed of 45 MPH. She returned home in the evening along the same route and averaged 30 MPH. If Ester spent a total of one hour co