Y = 100 - 0.4 t - t² represents the trend for sales of movie tickets in a multiplex with day before release as origin. Unit of Y is in Rs thousand and unit of t is days. Sales for day 3 are than sales of day 1.
8.9% lesser
For day 1 (t=1): Y = 100 - 0.4(1) - 1² = 98.6 For day 3 (t=3): Y = 100 - 0.4(3) - 3² = 100 - 1.2 - 9 = 89.8 Percentage change = [(89.8 - 98.6) / 98.6] * 100 = -8.9%
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Yearly Sales Data
The following data shows the sales (in Rs Lakhs) for each year:
Year / साल 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 Sales (in Rs Lakhs) / बिक्री (लाख रुपये में) 20 22 23 24 21 21 24 27 30 28 32 Rohit wants to check his IQ with an MCQ test. The test has five questions with one correct answer. Each question has three options. If he just randomly guesses the answer to each question, what is the probability that he will get exactly three questions correct?
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