exam Maths Puzzle Numerical Ability

a club with 10 members is to pick a president, vice president, treasurer, and secretary. If each office is to be held by one person and no person can hold 2 offices, in how many ways can those offices be filled?

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how do you solve for a system of linear equations y=2/3x-1 and y=-x+4 The quadratic function f(x) = .005x^2-.104+2.626 models U.S. wine consumption (in gallons per person) x years after 1980. According to this function, in which year was wine consu