Cocubes Computer Fundamentals Questions And Answers

Cocubes Computer Fundamentals MCQs : This section focuses on "Computer Fundamentals" of Cocubes Exam. These Multiple Choice Questions (MCQ) should be practiced to prepare for Cocubes Exam, entrance exams and other competitive examinations.

1. A, B and C can all together do piece of work in 20 days, in which B takes twice as long as A and C together do the work and C takes twice as long as A and B together take to do the work. In how many days B can alone do the work?

A. 40
B. 35
C. 60
D. 45

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2. The cost price of item B is Rs. 200/- more than the cost price of item A. Item A was sold at a profit of 20% and item B was sold at a loss of 30%. If the respective ratio of selling prices of items A and B is 6 :7, what is the cost price of item B?

A. Rs. 520
B. Rs. 400
C. Rs. 430
D. Rs. 360

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3. If A =x% of y and B =y%of x, then which of the following is true?

A. A is equal to B
B. A is smaller than B
C. A relationship between A and B cannot be determined
D. If x is greater than y, then A is less than B

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4. What is the largest 3 digit number exactly divisible by 18?

A. 978
B. 954
C. 980
D. 990

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5. A vessel contains 180 litres of mixture of milk and water in the respective ratio of 13 : 5. Fifty-four litres of this mixture was taken out and replaced with 6 litres of water, what is the approximate percentage of water in the resultant mixture?

A. 41
B. 31
C. 24
D. 9

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6. The HCF and LCM of two num¬bers are 12 and 924 respectively. Then the number of such pairs is

A. 0
B. 1
C. 2
D. 3

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7. The ages of the two persons differ by 20 years. If 5 year ago, the older one be 5 times as old as the younger one, then their present ages, in year are:

A. 24, 4
B. 30, 10
C. 20, 10
D. 15, 45

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8. What will be unit’s digit in the result of the expression
3^69 * 7^71 * 9^5?

A. 6
B. 4
C. 1
D. 7

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9. The ratio of the volumes of two cubes is 729: 1331. What is the ratio of their total surface areas?

A. 81 : 121
B. 729 : 1331
C. 0.384027777777778
D. 27 : 121

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10. Find the Value of tan60° + tan120°?

A. half
B. one
C. one-third
D. zero

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