XAT 2010

Instructions

Questions are followed by two statements labelled as I and II. Decide if these statements are sufficient to conclusively answer the question. Choose the appropriate answer from the options given below:
A. Statement I alone is sufficient to answer the question.
B. Statement II alone is sufficient to answer the question.
C. Statement I and Statement II together are sufficient, but neither of the two alone is sufficient to answer the question.
D. Either Statement I or Statement II alone is sufficient to answer the question.
E. Both Statement I and Statement II are insufficient to answer the question

Question 81

A sequence of positive integer is defined as $$A_{n+1}=A_{n}^{2}+1$$ for each n ‚Č• 0. What is the value of Greatest Common Divisor of $$A_{900}$$ and $$A_{1000}$$ ?
I. $$A_{0} = 1$$
II. $$A_{1} = 2$$

Video Solution


Instructions

For the following questions answer them individually

Question 82

a,¬† b,¬† c,¬† d and¬† e are integers such that 1 ‚ȧ a < b < c < d < e. If a, b, c, d and e are geometric progression and lcm (m , n) is the least common multiple of m and n, then the maximum value of $$\frac{1}{lcm(a,b)}+\frac{1}{lcm(b,c)}+\frac{1}{lcm(c,d)}+\frac{1}{lcm(d,e)}$$ is

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Instructions

Books and More sells books, music CDs and film DVDs. In December 2009, they earned 40% profit in music CDs and 25% profit in books. Music CDs contributed 35% towards their total sales in rupees. At the same time total sales in rupees from books is 50% more than that of music CDs.

Question 83

If Books and More have earned 20% profit overall, then in film DVDs they made

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Question 84

If Books and More made 50% loss in film DVDs, then overall they made

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Instructions

For the following questions answer them individually

Question 85

ABCD is a parallelogram with $$\angle$$ ABC = 60¬į. If the longer diagonal is of length 7 cm and the area of the parallelogram ABCD is $$15\frac{\sqrt{3}}{2}$$ sq.cm, then the perimeter of the parallelogram (in cm) is

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Instructions

OABC is a square where O is the origin and AB = 1. Consider the set of points $$s = {(x_{i},y_{i})}$$ in the square such that $$x_{i}+y_{i}$$‚ȧ1. Let $$P (x_{1}, y_{1})$$ and $$Q (x_{2}, y_{2})$$ be two such points. Two operations addition (+) and multiplication (.) on S are defined as
$$P + Q = (x_{1}+x_{2} - x_{1}x_{2},y_{1}y_{2})$$
$$P.Q = (x_{1}x_{2},y_{1}+y_{2} - y_{1}y_{2})$$

Question 86

For a very large number n, $$P^{n}+ Q^{n}$$ is

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Question 87

For a very large number n, nP + nQ is

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Instructions

Answer thequestions based on the data given in table 2

Cost and price data for Portland cement manufactured by Paharpur Cement and Bahsin Cement, for four consecutive quarters, are given in table 2:


Sales Revenue = Price √ó Sales Quantity
Profit = Sales Revenue ‚Äď Cost
Profit Rate = Profit / Sales Quantity

Question 88

Profit rate of Paharpur Cement is more than the profit rate of Bahsin Cement in:

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Question 89

If between Jan - Mar 2009 and Apr - Jun 2009 sales of Paharpur Cement increased from 543278 to 698236 and that of Bahsin Cement decreased from 526532 to 499874, then which of the following is true?

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Question 90

If between Apr - Jun 2009 and Jul - Sept 2009 sales of Paharpur Cement increased by 2.25%, its profit increased by

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