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Computer Knowledge Questions And Answers Sample Test 3


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Computer Knowledge Test 3


You have scored 3 out of 10
You Scored:2
Total Questions:2
Attended Questions:2
Correct Answered:2
1. Ambition is one of those ___________ which are _______ satisfied





2. What is the difference between the number of tickets of Movie D sold in Kolkata and the number of tickets of movie B sold in Lucknow



Explanation:

Required difference = 27-21 = 6 (in terms of thousand) = 6000


3. Find the value of 0.31x0.31 + 1.81x1.81 - 2x0.5611 = ?



Explanation:

0.31x0.31 + 1.81x1.81 - 2 x 0.5611 = (0.31)^2+(1.81)^2 - 2 x (0.31) x (1.81) = (1.81 - 0.31)^2 =(1.5)^2=2.25 Formula reference : a^2 + b^2 - 2 x a x b = ( a - b )^2


4. Which state Assembly has passed through a headcount the Bill to conduct indirect election of Mayors on 23 June 2016?



Explanation:

The Tamil Nadu Assembly has passed through a headcount the Bill to conduct indirect election of Mayors on 23 June 2016.


5. Specialized programs that allow particular input or output devices to communicate with the rest of the computer system are called ____





6. A man sold an item for Rs. 1500 at a loss of 25%. What will be the selling price of same item if he sells it at a profit of 20 %



Explanation:

S.P = 75 % of CP

=> 75 x CP /100= 1500

=> CP = 2000

20 % of CP = (20/100) x 2000 = 400

SP = 2000 + 400 = 2400


7. How many words can be formed with or without meaning by taking all the letters from the word TAKEN ?



Explanation:

There are totally 4 letters in the word TAKEN T, A, K, E and N. No. Of Words = 5 x 4 x 3 x 2 x 1 = 120


8.





9. When a bus started from the first stop, the number of male passengers to the number of female passengers was 3: 1. At the first stop, 16 passengers got down and 6 more female passengers got in. The ratio of the male to female passengers now became 2:1. What was the total number of passengers in the bus when it started from the first stop?



Explanation:

Males = 3x, Females = x.

First stop, m males left, f females left the bus and 6 females got.

No. of females = x - f + 6

(3x-m) / (x-f+6) = 2/1

=> 3x -2 = 2x - 2f + 12

Also m + f=16

x = 28 - 3f,

f=4 and x= 16 Number of passengers in the beginning = 4x = 64


10. A shopkeeper sells a T.V set on discount of 10% of print price and gains 25%. If the print price was Rs. 20000, find the cost price.



Explanation:

Discount = 10%, S.P = (90/100) x 20000 = 18000 Gain = 25%, C.P = (100/125) x 18000 = 14400


11. The circumference of the circle is 132 units. Then the area of the circle in sq. units is ____



Explanation:

Circumference of the circle is 2?r 2?r = 132 => 2 x (22/7) x r = 132 => r = 3 x 7 = 21 Area = ?r2 = ? x (21) x (21) = 441


12. Total memory of system can be known using __________





13. The Union Cabinet under Chairmanship of Prime Minister Narendra Modi has approved mega auction of all available spectrum (more than 2300 Megahertz) across how many bands?



Explanation:

The Union Cabinet has approved mega auction of all available spectrum (more than 2300 Megahertz) across the seven bands.


14. A small amount of memory included in the processor for high speed access id called _____





15. President Pranab Mukherjee returned 3 bills for reconsideration of which state legislative assembly?



Explanation:

President Pranab Mukherjee in June 2016 returned 3 bills to Manipur Legislative Assembly for reconsideration.


16. Which of the following ministry has approved the setting up of District Level Advisory and Monitoring Committees?



Explanation:

Union Ministry of Urban Development has approved the setting up of District Level Advisory and Monitoring Committees.


17. ___________ is the process of carrying out commands.





18. Two numbers are in the ratio of 1:2. If 7 be added to both, their ratio changes to 3:5. The greater number is



Explanation:

a/b = 1/2 and (a+7)/(b+7) = 3/5

Go from the option, by substituting the values, we will get the number 14 satisfying the condition

=> a= 14 and b = 28


19. The difference between a two digit number and the number obtained by interchanging two digits of the number is 9.The sum of the two digits of the number is 15. What is product of the two digits of two digit number ? 



Explanation:

Sum of the digits is 15, this can happen only when the digits are 7 and 8.

The number is 87, interchanging digits we get 78,

Difference between these two numbers = 9

Product of these two digits = 7 x 8 = 56


20. 5, 12, 23, 38, ?



Explanation:

Given, 5, 12, 23, 38 , x 21 ? 5 = 7 , 23 ? 12 = 11 = 7 + 4, 38 ? 23 = 15 = 11 + 4 x ? 38 = 15 + 4 => x ? 38 = 19 => x = 19 + 38 = 57


21. There is no glory in war ____________ the blood it _______________





22. The degree were ____________in the annual ____________





23. The labelled price of a product is Rs. 7500. If it is sold at 20% discount and the dealer earns 25% profit, Find its cost price.



Explanation:

S.P of the product = (80/100) x 7500 = Rs. 6000 Proft = 25 % => C.P = (100/125) x 6000 = Rs. 4800


24. Find the simple interest on Rs. 1800 at 3 % per annum for 7 years



Explanation:

Principal : 1800 Rate of interest : 3 Number of years : 7 Simple Interest = pnr/100 Simple Interest = (1800 x 7 x 3) / 100 Simple Interest = 378


25. In a disk, each block of data is written into ____





26. Find the value of 0.18x0.18 + 1.18x1.18 - 2x0.2124 = ?



Explanation:

0.18x0.18 + 1.18x1.18 - 2 x 0.2124 = (0.18)^2+(1.18)^2 - 2 x (0.18) x (1.18) = (1.18 - 0.18)^2 =(1)^2=1 Formula reference : a^2 + b^2 - 2 x a x b = ( a - b )^2


27. On account of _________ rainfall, they had to ________cut in water supply.





For years now, George W. Bush has told Americans that he would increase the number of troops in Iraq only if, the commanders on the ground asked him to do so. It was not a throw away live. Bush said it from the very first days of the war, when he and pentagon boss Donald Rumsfeld were criticized for going to war with too few troops. He said it right up until last summer, stressing at a news conference in Chicago that Iraq commander General George Casey will make the decisions as to how many troops we have there. Seasoned military people suspected that the line was a dodge that the civilians who ran the pentagon were testing their personal theory that war can be fought on the cheap and the brass simply knew better than to ask for more in any case the president repeated the mantra to dismiss any suggestion that the war was going badly. Who, after all, knew better than the generals on the ground? Now as the war nears the end of its fourth year and the number of Americans killed has surpassed 3,000 Bush has dropped the generals know best line sometime next week the president is expected to propose a surge in the number of 45 forces in Iraq for a period of up to two years. A senior official said reinforcements numbering about 20,000 troops and may be more could be in place within months; the surge would be achieved by extending the stay of some forces already in Iraq and accelerating the deployment of others. The irony is that while the generals would have liked more troops in the past, they are cool to the idea of spending more now that’s in past because the politicians and commanders had trouble agreeing on what the goal of a surge would further erode the readiness of the US’s already stressed ground forces and even those who back a surge are under no illusions about what it would mean to the casualty rate. If you put more American troops on the front line said a white house official, you’re going to have more casualties. Coming from Bush, a man known for bold strokes the surge is a strange half-measure- too large for the political climate at house too small to crush the insurgency in Iraq and surely three years too late Bush has waved off a bipartisan rescue mission out of pride stubbornness or ideology or same combination of the three, Rather than reversing course, as all the wise elders of the Iraq study group advised, the commander in chief is betting that more troops will lead the way to what one white house official calls “victory.”

28. Bush and Rumsfeld had received brick bats for-





29. 181 helpline number is associated with which of the following?



Explanation:

Nagaland Governor P B Acharya has launched women helpline - 181 in the premises of District Hospital Dimapur in Nagaland


30. The marked price of a radio is 30% more than its cost price. If a discount of 10% is given on the marked price, find the gain percent.



Explanation:

Let the C.P = 100 Rs. M.P = 30% more than 100. M.P = 130 Rs. He gives discount of 10%, S.P = 130 - 13 = 117 Rs Profit 17 Rs. => Profit percentage = 17%




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