other Maths Puzzle Numerical Ability

In a race with 30 runners where 8 trophies will be given to the top 8 runners (the trophies are distinct: first place, second place, etc), how many ways can this be done?

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exstory.com QUANTITATIVE ABILITY All questions are Multiple-Choice Q1. In a kilometre race, if A gives B a 40 m start, A wins by 19 s start, B wins by 40 m. Find the time taken by B to run 5,000 m? a. 150 s b. 450 s c. 750 s d. 825 s Q2. Pipe A takes 16 min to fill a tank circumferences are in the ratio 2:3, fill another tank twice as big as the f cross-sectional circumference that is one the second tank? (Assume the rate at which water flows through a unit cross is same for all the three pipes. ) a. 66/13 b. 40/13 c. 16/13 d. 32/13 Q3. Three consecutive whole numbers are such that the square of the middle number is greater than the product of the other two by 1 a. 6 b. 18 c. 12 d. All of these Q4. The arithmetic mean of 2 numbers is 34 and their geometric mean is 16 numbers will be a. 4 b. 16 c. 18 d. 12 Q5. If x% of a is the same as y% of b, then z% of b is : a. (xy/z)% of a b. (yz/x)% of a QUANTITATIVE ABILITY: Sample Questions Choice-Questions with only one option as the correct answer In a kilometre race, if A gives B a 40 m start, A wins by 19 s. But if A gives B a 30 s Find the time taken by B to run 5,000 m? Pipe A takes 16 min to fill a tank. Pipes B and C, whose cross-sectional circumferences are in the ratio 2:3, fill another tank twice as big as the first. sectional circumference that is one-third of C, how long will it take for B and C to fill the second tank? (Assume the rate at which water flows through a unit cross ) Three consecutive whole numbers are such that the square of the middle number is greater than the product of the other two by 1. Find the middle number. 2 numbers is 34 and their geometric mean is 16 If x% of a is the same as y% of b, then z% of b is : Questions with only one option as the correct answer. But if A gives B a 30 s sectional . If A has a third of C, how long will it take for B and C to fill the second tank? (Assume the rate at which water flows through a unit cross-sectional area Three consecutive whole numbers are such that the square of the middle number is 2 numbers is 34 and their geometric mean is 16. One of th How many ways can you arrange 16 people into 4 rows of 4 desks each?