exam Maths Puzzle Numerical Ability

Suppose that a school has 1000 lockers and that they are all closed. A person
passes through, opening every other locker, beginning with locker 2. Then another person passes throu

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exam Other Question

The deepest part of the lake is indicated by the unknown depth on diagram. Based on the 5 depth measurements above the mean (average) depth of the lake is 46 feet. What is the me 1. the perimeter of a rectangular carpet is 70 feet. the width is three-fourths the lenght. find the width.
2. the lenght of a rectangular room is six times as long as the width.