exam Maths Puzzle Numerical Ability

Social Security Numbers: A social security number consists of nine digits. How many different social security numbers are possible if repetition of digits is permitted?

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exam Other Question

The base of a triangle is one third as long as its height. If the area of the triangle is 24 square meters, how long is its base? A rancher has 200 feet of fencing with which to enclose two adjacent rectangular corrals. What measurements will produce a maximum enclosed area?