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Instruction:
 Total number of questions : 20.
 Time alloted : 30 minutes.
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1.  A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream. 

Your Answer: Option (Not Answered) Correct Answer: Option C Explanation: Speed downstream = (13 + 4) km/hr = 17 km/hr.
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2.  How many times are the hands of a clock at right angle in a day? 

Your Answer: Option (Not Answered) Correct Answer: Option C Explanation: In 12 hours, they are at right angles 22 times. In 24 hours, they are at right angles 44 times. Learn more problems on : Clock Discuss about this problem : Discuss in Forum 
3.  Find the ratio in which rice at Rs. 7.20 a kg be mixed with rice at Rs. 5.70 a kg to produce a mixture worth Rs. 6.30 a kg. 

Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: By the rule of alligation:
Required ratio = 60 : 90 = 2 : 3. Learn more problems on : Alligation or Mixture Discuss about this problem : Discuss in Forum 
4.  How many kilogram of sugar costing Rs. 9 per kg must be mixed with 27 kg of sugar costing Rs. 7 per kg so that there may be a gain of 10% by selling the mixture at Rs. 9.24 per kg? 

Your Answer: Option (Not Answered) Correct Answer: Option D Explanation: S.P. of 1 kg of mixture = Rs. 9.24, Gain 10%.
By the rule of allilation, we have:
Ratio of quantities of 1^{st} and 2^{nd} kind = 14 : 6 = 7 : 3. Let x kg of sugar of 1^{st} be mixed with 27 kg of 2^{nd} kind. Then, 7 : 3 = x : 27
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5.  Two trains of equal lengths take 10 seconds and 15 seconds respectively to cross a telegraph post. If the length of each train be 120 metres, in what time (in seconds) will they cross each other travelling in opposite direction? 

Your Answer: Option (Not Answered) Correct Answer: Option B Explanation:
Relative speed = (12 + 8) = 20 m/sec.
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In each of the following questions, a question is asked and is followed by three statements. While answering the question, you may or may not require the data provided in all the statements. You have to read the question and the three statements and then decide whether the question can be answered with any one or two of the statements or all the three statements are required to answer the question. The answer number bearing the statements, which can be dispensed with, if any, while answering the question is your answer.  
6. 


Your Answer: Option (Not Answered) Correct Answer: Option D Explanation: I. gives, Rate = 5% p.a. II. gives, S.I. for 1 year = Rs. 600. III. gives, sum = 10 x (S.I. for 2 years). Now I, and II give the sum. For this sum, C.I. and hence amount can be obtained. Thus, III is redundant. Again, II gives S.I. for 2 years = Rs. (600 x 2) = Rs. 1200. Now, from III, Sum = Rs. (10 x 1200) = Rs . 12000.
Thus, C.I. for 2 years and therefore, amount can be obtained. Thus, I is redundant. Hence, I or III redundant. Learn more problems on : Compound Interest Discuss about this problem : Discuss in Forum 
Find the odd man out.  
7.  3, 5, 11, 14, 17, 21 

Your Answer: Option (Not Answered) Correct Answer: Option C Explanation: Each of the numbers except 14 is an odd number. The number '14' is the only EVEN number. Learn more problems on : Odd Man Out and Series Discuss about this problem : Discuss in Forum 
8.  331, 482, 551, 263, 383, 362, 284 

Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: In each number except 383, the product of first and third digits is the middle one. Learn more problems on : Odd Man Out and Series Discuss about this problem : Discuss in Forum 
Each of the questions given below consists of a statement and / or a question and two statements numbered I and II given below it. You have to decide whether the data provided in the statement(s) is / are sufficient to answer the given question. Read the both statements and
 
9. 


Your Answer: Option (Not Answered) Correct Answer: Option E Explanation: Let the total investment be Rs. x.
Thus, both I and II are needed to get the answer. Correct answer is (E). Learn more problems on : Partnership Discuss about this problem : Discuss in Forum 
10.  A man standing at a point P is watching the top of a tower, which makes an angle of elevation of 30º with the man's eye. The man walks some distance towards the tower to watch its top and the angle of the elevation becomes 60º. What is the distance between the base of the tower and the point P? 

Your Answer: Option (Not Answered) Correct Answer: Option D Explanation: One of AB, AD and CD must have given. So, the data is inadequate. Learn more problems on : Height and Distance Discuss about this problem : Discuss in Forum 
11.  If log 27 = 1.431, then the value of log 9 is: 

Your Answer: Option (Not Answered) Correct Answer: Option C Explanation: log 27 = 1.431 log (3^{3} ) = 1.431 3 log 3 = 1.431 log 3 = 0.477 log 9 = log(3^{2} ) = 2 log 3 = (2 x 0.477) = 0.954. Learn more problems on : Logarithm Discuss about this problem : Discuss in Forum 
12. 


Your Answer: Option (Not Answered) Correct Answer: Option A Explanation:
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13.  If log_{x} y = 100 and log_{2} x = 10, then the value of y is: 

Your Answer: Option (Not Answered) Correct Answer: Option C Explanation: log _{2} x = 10 x = 2^{10}. log_{x} y = 100 y = x^{100} y = (2^{10})^{100} [put value of x] y = 2^{1000}. Learn more problems on : Logarithm Discuss about this problem : Discuss in Forum 
Find out the wrong number in the series.  
14.  19, 26, 33, 46, 59, 74, 91 

Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: Go on adding 7, 9, 11, 13, 15, 17 respectively to obtain the next number. So, 33 is wrong. It must be 35 Learn more problems on : Odd Man Out and Series Discuss about this problem : Discuss in Forum 
15.  Three number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is: 

Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: Let the numbers be 3x, 4x and 5x. Then, their L.C.M. = 60x. So, 60x = 2400 or x = 40. The numbers are (3 x 40), (4 x 40) and (5 x 40). Hence, required H.C.F. = 40. Learn more problems on : Problems on H.C.F and L.C.M Discuss about this problem : Discuss in Forum 
Insert the missing number.  
16.  2, 4, 12, 48, 240, (....) 

Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: Go on multiplying the given numbers by 2, 3, 4, 5, 6. So, the correct next number is 1440. Learn more problems on : Odd Man Out and Series Discuss about this problem : Discuss in Forum 
17.  11, 13, 17, 19, 23, 29, 31, 37, 41, (....) 

Your Answer: Option (Not Answered) Correct Answer: Option A Explanation:
Numbers are all primes. The next prime is 43.
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18.  Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour? 

Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: Due to stoppages, it covers 9 km less.
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19.  An aeroplane covers a certain distance at a speed of 240 kmph in 5 hours. To cover the same distance in 1 hours, it must travel at a speed of: 

Your Answer: Option (Not Answered) Correct Answer: Option D Explanation: Distance = (240 x 5) = 1200 km. Speed = Distance/Time Speed = 1200/(5/3) km/hr. [We can write 1 hours as 5/3 hours]
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20.  A can lay railway track between two given stations in 16 days and B can do the same job in 12 days. With help of C, they did the job in 4 days only. Then, C alone can do the job in: 

Your Answer: Option (Not Answered) Correct Answer: Option C Explanation:
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