exam
Maths Puzzle
Numerical Ability
Next year, Lyle will be twice as old as Sean will be. Four years ago, he was three times as old as Sean was. How old is each?
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exam Other Question
Show all stages of factoring separately (i.e., show the result of factoring out a GCF before taking the resulting polynomial and factoring it again).
Factor completely:
x3 - 26x2 + 48x
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