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• There is a circular path around a sports field. Sonia takes 18 minutes to drive one round of the field, while Ravi takes 12 minutes for the same. Suppose they both start at the same point and at the same time, and go in the same direction. After how many
•  There were 45 students in a hostel, if the numbers of students increased by 7, the expenses of the mess were increased by Rs. 39 per day while the average expenditure per head diminished by Re.1. What
• The university book shop selects 200 of its more than 8000 customers to participate in a study on service quality in the shop. The book Shop has established a __________ for use in its research.
• Greg Beck of Quality Market Research tells placement student John to go out and select for personal interview ten men and ten women. Greg is using ........ sampling for this phase of the research.
• A seller marks the price 50% above the cost price and gives 10% discount on an item. While selling, he cheats customer by giving 20% less in weight. Find his overall profit percent (approximate)?