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In a ball mill, the volume occupied by the balls (when the mill is stopped) is about __________ percent of the volume of the mill.
The diameter of a ball mill is 3 m and the diameter of the balls in the ball mill is 50 cm. What is the critical speed of the ball mill?
Given below are two quantities named I and II. Based on the given information, you have to determine the relation between the two quantities. You should use the given data and your knowledge of Mathematics to choose among the possible answers. A man has two balls. The ratio of radius of first ball to that of the second ball is 7 : 3. Quantity I: If man cut the first ball from middle and difference between total surface area of part of first ball and total surface area of second ball is 1538.46cm2, then find the radius of smaller ball. Quantity II: If the sum of radius of two balls is 30, then what is the radius of first ball?
Consider the following question and statements and decide which of the statements is sufficient to answer the question. There are seven balls of different size and colors: green yellow, blue, orange, red, pink and black. What is the order of the balls from largest to smallest? Statements: 1. The red ball is larger than the green ball. 2. The pink ball is the smallest. 3. The blue ball is the largest. 4. The green ball is larger than the yellow ball. 5. The yellow ball is larger than the orange and black balls.
Consider the following question and statements and decide which of the statements is sufficient to answer the question. There are seven balls of different size and colors: green, yellow, blue, orange, red, pink and black. What is the order of the balls from largest to smallest? Statements: 1. The red ball is larger than the green ball. 2. The pink ball is the smallest. 3. The blue ball is the largest. 4. The green ball is larger than the yellow ball. 5. The yellow ball is larger than the orange and black balls. 
A database of research articles in a journal uses the following schema. (VOLUME, NUMBER, STARTPAGE, ENDPAGE, TITLE, YEAR, PRICE) The primary key is (VOLUME, NUMBER, STARTPAGE, ENDPAGE) and the following functional dependencies exist in the schema. (VOLUME, NUMBER, STARTPAGE, ENDPAGE) → TITLE (VOLUME, NUMBER) → YEAR (VOLUME, NUMBER, STARTPAGE, ENDPAGE) → PRICE The database is redesigned to use the following schemas. (VOLUME, NUMBER, STARTPAGE, ENDPAGE, TITLE, PRICE) (VOLUME, NUMBER, YEAR) Which is the weakest normal form that the new database satisfies, but the old one does not?  
Rekha, Hema and Kajal bought the same washing machine at the same MRP from 3 different dealers. All the dealers offered 2 discounts and subsequent cash backs after discount. Rekha got discounts of 5 percent and cashback of 20 percent, Hema got 16 percent discount and cashback of 15 percent, Kajal got 15 percent discount and cashback of 12 percent. Find out who purchased the machine at maximum price? 
Read the following passage and answer the item that follows. Your answers to this item should be based on the passage only. In the last two decades, the world's gross domestic product (GDP) has increased by 50 percent, whereas inclusive wealth has increased by a mere 3 percent. In recent decades, GDP-driven economic performance has only harmed inclusive wealth like human capital; and natural capital like forests, land and water. While the world's human capital which stands at 57 percent of total inclusive wealth grew by only 8 percent, the natural capital which is 23 percent of total inclusive wealth declined by 30 percent worldwide in the last two decades. Which of the following is the most crucial inference from the above passage?
Let X be a right circular cylinder with height ‘h’ and diameter ‘d’, Y be a right circular cone with height and diameter equal to that of cylinder X and Z be a sphere of maximum volume that can be inscribed in the cylinder X. Consider the following statements: 1. If d < h, then the volume of Y is (h/2d) times the volume of Z. 2. If d > h, then the volume of Y is (d2/2h2) times the volume of Z. Which of the above statements is/are correct?
The Taxi charges in a city consist of a fixed charge together with the charge for the distance covered. For a distance of 7 km, the charge is Rs. 27 and for a distance of 5 km, the charge is Rs. 21. What is the charge per km?