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Maths Puzzle
Numerical Ability
How long will it take a bus traveling at 60 miles per hour to overtake a car traveling at 40 miles per hour if the car had a 1.5-hour head start?
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how do you find the answer to this problem: What is the least positive integer that is divisible by whole numbers from 1 to 9.
For f(x)= 1/x^2-2x-8, find the interval(s) where f(x)<0.
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Can't quite figure this one out. I think 2 is an answer and I think there's one more.
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Thanks for any help.