UPSC 2008 › CSAT
13 questions · 2008 · answers as per the UPSC key
In the series AABABCABCDABCDE... which letter occupies the 100th position?
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What is the number of terms in the series 117, 120, 123, 126, ..., 333?
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In how many different ways can four books A, B, C and D be arranged one above another in a vertical order such that the books A and B are never in continuous position?
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Carpenter A can make a chair in 6 hours, carpenter B in 7 hours and carpenter C in 8 hours. If each carpenter works for 8 hours per day, how many chairs will be made in 21 days?
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A person purchases 100 pens at a discount of 10%. The net amount of money spent by the person to purchase the pens is Rs 600. The selling expenses incurred by the person are 15% on the net cost price. What should be the selling price for 100 pens in order to earn a profit of 25%?
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A schoolteacher has to select the maximum possible number of different groups of 3 students out of a total of 6 students. In how many groups any particular student will be included?
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In an examination, 70% of the students passed in the Paper I, and 60% of the students passed in the Paper II. 15% of the students failed in both the papers while 270 students passed in both the papers. What is the total number of students?
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March 1, 2008 was Saturday. Which day was it on March 1, 2002?
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Which one of the following is the correct sequence in respect of the Roman numerals—C, D, L and M?
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In how many different ways can all of 5 identical balls be placed in the cells shown above such that each row contains at least 1 ball?
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There are 6 different letters and 6 correspondingly addressed envelopes. If the letters are randomly put in the envelopes, what is the probability that exactly 5 letters go into the correctly addressed envelopes?
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There are two identical red, two identical black and two identical white balls. In how many different ways can the balls be placed in the cells (each cell to contain one ball) shown above such that balls of the same colour do not occupy any two consecutive cells?
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How many different triangles are there in the figure shown above?