exam Maths Puzzle Numerical Ability

(y+3)/(y-3)

(y^2-9)/y^2-5y+6

Divide, Factor and Simplify

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exam Other Question

In a middle school it has 500 lockers, all are closed. Five hundred students start down the hall. The fist student opens every locker. The second student closes all lockers that ar The total cost function of a company producing two units A & B is of the form

c( x,y) = ax^2+by^2+c

where x is the number of units of A produced and Y is the number of of un