Hyderabad DCCB Test of Computer and Clerical Aptitude Question Paper.
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Hyderabad DCCB Test of Computer and Clerical Aptitude Question Paper
1. A certain type of mixture is prepared by mixing brand A at Rs.9 a kg. with brand B at Rs.4 a kg. If the mixture is worth Rs.7 a kg., how many kgs. of brand A are needed to make 40kgs. of the mixture?
Ans. Brand A needed is 24kgs.
2. A wizard named Nepo says “I am only three times my son’s age. My father is 40 years more than twice my age. Together the three of us are a mere 1240 years old.” How old is Nepo?
Ans. 360 years old.
3. One dog tells the other that there are two dogs in front of me. The other one also shouts that he too had two behind him. How many are they?
Ans. Three.
4. A man ate 100 bananas in five days, each day eating 6 more than the previous day. How many bananas did he eat on the first day?
Ans. Eight.
5. If it takes five minutes to boil one egg, how long will it take to boil four eggs?
Ans. Five minutes.
6. Three containers A, B and C have volumes a, b, and c respectively; and container A is full of water while the other two are empty. If from container A water is poured into container B which becomes 1/3 full, and into container C which becomes 1/2 full, how much water is left in container A?
7. ABCE is an isosceles trapezoid and ACDE is a rectangle. AB = 10 and EC = 20. What is the length of AE?
Ans. AE = 10.
8. In the given figure, PA and PB are tangents to the circle at A and B respectively and the chord BC is parallel to tangent PA. If AC = 6 cm, and length of the tangent AP is 9 cm, then what is the length of the chord BC?
Ans. BC = 4 cm.
9 Three cards are drawn at random from an ordinary pack of cards. Find the probability that they will consist of a king, a queen and an ace.
Ans. 64/2210.
10. A number of cats got together and decided to kill between them 999919 mice. Every cat killed an equal number of mice. Each cat killed more mice than there were cats. How many cats do you think there were ?
Ans. 991.
11. If Log2 x – 5 Log x + 6 = 0, then what would the value / values of x be?
Ans. x = e2 or e3.
12. The square of a two digit number is divided by half the number. After 36 is added to the quotient, this sum is then divided by 2. The digits of the resulting number are the same as those in the original number, but they are in reverse order. The ten’s place of the original number is equal to twice the difference between its digits. What is the number?
Ans. 46
13.Can you tender a one rupee note in such a manner that there shall be total 50 coins but none of them would be 2 paise coins.?
Ans. 45 one paisa coins, 2 five paise coins, 2 ten paise coins, and 1 twenty-five paise coins.
14.A monkey starts climbing up a tree 20ft. tall. Each hour, it hops 3ft. and slips back 2ft. How much time would it take the monkey to reach the top?
Ans.18 hours.
15. What is the missing number in this series? 8 2 14 6 11 ? 14 6 18 12
Ans. 9
16. The minute hand of a clock overtakes the hour hand at intervals of 64 minutes of correct time. How much a day does the clock gain or lose?
Ans. 32 8/11 minutes.
17. Solve for x and y: 1/x – 1/y = 1/3, 1/x2 + 1/y2 = 5/9.
Ans. x = 3/2 or -3 and y = 3 or -3/2.
18. Daal is now being sold at Rs. 20 a kg. During last month its rate was Rs. 16 per kg. By how much percent should a family reduce its consumption so as to keep the expenditure fixed?
Ans. 20 %.
19. Find the least value of 3x + 4y if x2y3 = 6.
Ans. 10.
20. Can you find out what day of the week was January 12, 1979?
Ans. Friday.
21. A garrison of 3300 men has provisions for 32 days, when given at a rate of 850 grams per head. At the end of 7 days a reinforcement arrives and it was found that now the provisions will last 8 days less, when given at the rate of 825 grams per head. How, many more men can it feed?
Ans. 1700 men.
22. From 5 different green balls, four different blue balls and three different red balls, how many combinations of balls can be chosen taking at least one green and one blue ball?
Ans. 3720.
23. Three pipes, A, B, & C are attached to a tank. A & B can fill it in 20 & 30 minutes respectively while C can empty it in 15 minutes. If A, B & C are kept open successively for 1 minute each, how soon will the tank be filled?
Ans. 167 minutes.
24. A person walking 5/6 of his usual rate is 40 minutes late. What is his usual time?
Ans. 3 hours 20 minutes.
25. Mr. Shah decided to walk down the escalator of a tube station. He found that if he walks down 26 steps, he requires 30 seconds to reach the bottom. However, if he steps down 34 stairs he would only require 18 seconds to get to the bottom. If the time is measured from the moment the top step begins to descend to the time he steps off the last step at the bottom, find out the height of the stair way in steps?
Ans.46 steps.
Computer Awareness
26. The ___controls communications for the entire computer system.
(1) Arithmetic-logic unit
(2) Semiconductor
(3) Motherboard
(4) Coprocessor
(5) None of these
27. A ___is approximately 1 million bytes.
(1) Megabyte
(2) Kilobyte
(3) Gigabyte
(4) Terabyte
(5) None of these
28. Which of the following is formally defined as a criminal action perpetrated primarily through the use of a computer?
(1) Phishing
(2) Hacking
(3) Cybercrime
(4) Social networking
(5) None of these
29. Hardware used to translate words, sound images and actions that People understands into a form that the system unit can process is known as-
(1) Device drivers
(2) Device readers
(3) Input devices
(4) Output devices
(5) None of these
30. Being- means being familiar enough with computers in such a manner that you understand their capabilities and limitations.
(1) Computer literate
(2) Computer competent
(3) Computer savvy
(4) Technology literate
(5) None of these
31. The System component that controls and manipulates data in order to produce information is called the –
(1) Keyboard
(2) Microprocessor
3) Monitor
(4) Mouse
(5) None of these
32. The container that houses most of the electronic components that make up a computer system is known as the –
(1) Arithmetic -logic unit
(2) Central processing unit
(3) RFID
(4) System catalog
(5) None of these
33. How a network is arranged and how it shares information and resources is called a network___
(1) Topology
(2) Strategy
(3) Protocol
(4) Architecture
5) None of these
34. These chips are specifically designed to handle the processing requirements related to displaying and manipulating 3-D images.
(1) Graphics coprocessors
(2) Arithmetic – logic unit processors
(3) Control unit processors
(4) CISC chips
(5) None of these
35. Which type of software is used to make a slide show ?
(1) Spreadsheets software
(2) World processing software
(3) Presentation software
(4) System software
(5) None of these
36. RAM is referred to as- storage.
(1) Direct
(2) Volatile
(3) Secondary
(4) Sequential
(5) None of these
37. The – tells the rest of the computer how to carry out a program’s instruction.
(1) ALU
(2) Control unit
(3) System unit
(4) Motherboard
(5) None of these
38. The combination of operating system and processor in a computer is referred to as computers’___
(1) Firmware
(2) Specification
(3) Minimum requirements
(4) Platinum
(5) None of these
39. The position of a disk that contains no stored data, but may contain latent data is called-
(1) RAM slack
(2) A cluster
(3) Swap space
(4) Unallocated space
(5) None of these
40. What is keyboard used for?
(1) Input text and numbers and send commands to the computer
(2) To create new keys to use with your computer
(3) To open the computer up
(4) To create pictures and images and send them to your computer
(5) None of these
41. The information processing cycle includes the following processes –
(1) Input, processing, output, storage
(2) Input, output, manipulation, arithmetic
(3) Data, processing, printing, editing
(4) Storage, display, data, information
(5) None of these
42. How tightly the bits can be packed next to one another on a disk is referred to as-
(1) Tracks
(2) Sectors
(3) Density
(4) Configuration
(5) None of these
43. What are the speakers attached to your computer used for?
(1) Displaying images
(2) Sending messages
(3) Storing messages
(4) Handling sound and music
(5) Make system look technical
44. Tape is described as using this type of access-
(1) magneto-optical
(2) DVD
(3) Direct
(4) Disastrous
(5) None of these
45. Many experts are predicting that this revolution is expected to dramatically affect the way we communicate and use memory___
(1) Graphics
(2) Input
(3) Computer technology
(4) Industry
(5) Wireless
46. The acronym DBMS stands for what?
1) Double-blind management setup
(2) Document binder management system
(3) Data binding and marketing structure
(4) Database methodology system
(5) None of these
47. The Name of the location of a particular piece of data is its___
(1) Address
(2) Memory name
(3) Storage site
(4) Data location
(5) None of these
48. The arithmetic/logic unit performs the following actions___
(1) Checks data for accuracy
(2) Does calculations using addition, subtraction, multiplication, and division
(3) Does logical comparisons, such as equal to, greater than, less than
(4) Does both calculations and logical comparisons
(5) None of these
49.The most powerful type of computer is___
(1) Mainframe computers
(2) Microcomputers
(3) Minicomputers
(4) Synocomputers
(5) Supercomputers
50. Letters, memos, term papers, reports and contracts are all examples of ___
(1) Models
(2) Spreadsheets
(3) Documents
(4) menus
(5) None of these
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