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Maths Puzzle
Numerical Ability
Condense the expression. 3log(base 10)2-log(base 10)y+1/3log(base 10)x
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book Other Question
A box contains 35 machine parts, 8 of which are defective. A quality control inspector randomly selects 5 of the 35 parts for testing. What is the probablility that at least one part is defective?
If a map has a scale of 11/2 inches to the mile and if a distance between two points on the map is 9 inches apart, how much is that distance in actual miles?
The book says 6 miles. why? 11/2 * 9??