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Computer Knowledge Questions And Answers Sample Test 4


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Computer Knowledge Test 4


You have scored 3 out of 10
You Scored:2
Total Questions:2
Attended Questions:2
Correct Answered:2
1. Compiling creates a(n) _____ 





2. Total memory of system can be known using __________





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





4. Find the sum of first 15 odd natural numbers.



Explanation:

Sum of first n odd natural numbers = n2

Sum of first 15 odd natural numbers = 152 = 225


5. Find the value of 0.53x0.53 + 1.73x1.73 - 2x0.9169 = ?



Explanation:

0.53x0.53 + 1.73x1.73 - 2 x 0.9169 = (0.53)^2+(1.73)^2 - 2 x (0.53) x (1.73) = (1.73 - 0.53)^2 =(1.2)^2=1.44 Formula reference : a^2 + b^2 - 2 x a x b = ( a - b )^2


6. 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


7. What is the average number of tickets of Movie C sold in all the six cities ?



Explanation:

Average of number of tickets of movie C sold in all six cities = (35+21+19+32+26+20)/6 = 153 / 6 = 25.5 thousands = 25.5 x 1000 = 25500


8. 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


9. The Asian Development Bank (ADB) has approved a 500 million dollars loan to build a bridge across the Ganga River in which state?



Explanation:

The Asian Development Bank (ADB) has approved a 500 million dollars loan to build a bridge across the Ganga River in Bihar.


10. Which of the following is not an operating system?





If citizens can not have the right to commit suicide, they cannot be allowed to stay in an atmosphere full of smoke because that might cause certain chronic disease leading to their unnatural death. Thus, there should be a complete ban on smoking in all the public places across the country. The recent Supreme Court order banning smoking in public places is not restricted to a few metropolitan towns; it must be enforced in all the villages and cities. The three-page order contains certain statements of facts. ?Fundamental right guaranteed under Article 21, of the Constitution provides that none shall be deprived of his life without due process law. Than why a non-smoker should be afflicted by various diseases including lung cancer or of heart only because he is required to go to public places?? Some time back when the court ruled that suicide was unconstitutional and illegal, it had referred to Article 21, which says that State alone has the right to deprive a citizen of his life, but with due process of law. Thus inhaling of smoke by passive smokers has been equated with commission of suicide, an act prohibited under law. But when a person who makes an unsuccessful attempt to commit is liable to face criminal prosecution which man end in his conviction, a passive smoker, however, is immune from any penal action. If one is made to inhale smoke for no fault of his and also against his wishes, the perpetrator of offence of smoking gets away with a nominal fine for such a grave offence that costs the exchequer Rs. 13,500 crore annually in terms of loss of productivity. According to WHO report, smoking may kill seven million people annually. During the last half century, smoking killed more than 10 million people in the developing countries alone. The court also felt that the persons not indulging in smoking cannot be compelled to or subjected to passive smoking on account of acts of the smokers. The ban on smoking order is judicial intervention, and not an activism.

11. Opposite meaning of due





12. The product of two consecutive even numbers is 15128. Find the average of these two numbers.



Explanation:

We wil go from the option. We will eliminate 133 and 139, since their product will exceed 16900.

Now the tug of war is between 123 and 127.

Lets take 123, if 123 is the average then the consecutive even numbers will be 122 and 124.

Now, observe, 122 x 124 = ....8, that is the resulting number ends with 8.

Now you try for 127.

(HINT : The consecutive even number with 127 as average us 126 and 128)

The two numbers are 122 and 124. Average is 123.


13. 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


14. 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


15. 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.


If citizens can not have the right to commit suicide, they cannot be allowed to stay in an atmosphere full of smoke because that might cause certain chronic disease leading to their unnatural death. Thus, there should be a complete ban on smoking in all the public places across the country. The recent Supreme Court order banning smoking in public places is not restricted to a few metropolitan towns; it must be enforced in all the villages and cities. The three-page order contains certain statements of facts. ?Fundamental right guaranteed under Article 21, of the Constitution provides that none shall be deprived of his life without due process law. Than why a non-smoker should be afflicted by various diseases including lung cancer or of heart only because he is required to go to public places?? Some time back when the court ruled that suicide was unconstitutional and illegal, it had referred to Article 21, which says that State alone has the right to deprive a citizen of his life, but with due process of law. Thus inhaling of smoke by passive smokers has been equated with commission of suicide, an act prohibited under law. But when a person who makes an unsuccessful attempt to commit is liable to face criminal prosecution which man end in his conviction, a passive smoker, however, is immune from any penal action. If one is made to inhale smoke for no fault of his and also against his wishes, the perpetrator of offence of smoking gets away with a nominal fine for such a grave offence that costs the exchequer Rs. 13,500 crore annually in terms of loss of productivity. According to WHO report, smoking may kill seven million people annually. During the last half century, smoking killed more than 10 million people in the developing countries alone. The court also felt that the persons not indulging in smoking cannot be compelled to or subjected to passive smoking on account of acts of the smokers. The ban on smoking order is judicial intervention, and not an activism.

16. Perpetrator





17. 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


18. Sunil reminded him __________his promise but he was quite in different to _____ Sunil said





19. 2, 10, 17, 26, ?



Explanation:

2, 10, 17, 26 => 12 + 1, 22 +1 , 32 + 1, 42 + 1 , 52 + 1, the next number should 62 + 1 = 37


20. 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


21. 999 x 99 x 9 = ?



Explanation:

890109


22. The number of tickets of Movie E sold in Chennai is what percentage of number of tickets of Movie A sold in Mumbai



Explanation:

Required Percentage = 34 x 100 / 20 = 170 %


23. The degree were ____________in the annual ____________





24. 123, 146, 171, 198, ?



Explanation:

123 = 112 + 2 , 146 = 122 + 2 , 171 = 132 + 2 , 198 = 142 + 2 now, 152+2 = 227


25. The Union Cabinet has approved proposal of extending the deadline for implementing the UDAY scheme to which year?



Explanation:

The Union Cabinet has approved proposal of extending the deadline for implementing the Ujjwal Discom Assurance Yojana (UDAY) by a year to March 31, 2017.


26. where he busied himself (1) / Compelled to abdicate, he (2)/ withdrew to a monastery, (3) / with writing commentaries on the Scriptures (4)





27. Even if a man is found ______________ by a court, he can ___________to a higher court





28. (0.2)2 / (0.008) = (0.2)? / (0.04)3 .



Explanation:

(0.2)2 / (0.2)3 = (0.2)x / (0.2)6 => (0.2)-1 = (0.2)x-6 => x-6 = -1 => x= 5




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