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1.

P, Q, R and S are four types of dangerous microbes recently found in a human habitat. The area of each circle with its diameter printed in brackets represents the growth of a single microbe surviving human immunity system with 24 hours of entering the body. The danger to human beings varies proportionately with the toxicity, potency and growth attributed to a microbe shown in the figure below:

A pharmaceutical company is contemplating the development of a vaccine against the most dangerous microbe. Which microbe should the company target in its first attempt? [2 marks]
(A) P
(B) Q
(C) R
(D) S

last reply by CpjJwWHV • 11 years ago • asked in Computer Science And Engineering, 2011

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2.

Few school curricula include a unit on how to deal with bereavement and grief, and yet all students at some point in their lives suffer from losses through death and parting.
Based on the above passage which topic would not be included in a unit on bereavement? [2 marks]
(A) how to write a letter of condolence
(B) what emotional stages are passed through in the healing process
(C) what the leading causes of death are
(D) how to give support to a grieving friend

last reply by CpjJwWHV • 12 years ago • asked in Computer Science And Engineering, 2011

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3.

A container originally contains 10 litres of pure spirit. From this container 1 litre of spirit is replaced with 1 litre of water. Subsequently, 1 litre of the mixture is again replaced with 1 litre of water and this process is repeated one more time. How much spirit is now left in the container? [2 marks]
(A) 7.58 litres
(B) 7.84 litres
(C) 7 litres
(D) 7.29 litres

last reply by CpjJwWHV • 13 years ago • asked in Computer Science And Engineering, 2011

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4.

A transporter receives the same number of orders each day. Currently, he has some pending orders (backlog) to the shipped. If he uses 7 trucks, then at the end of the 4^th day he can clear all the orders. Alternatively, if he uses only 3 trucks, then all the orders are cleared at the end of the 10^th day. What is the minimum number of trucks required so that there will be no pending order at the end of the 5^th day? [2 marks]
(A) 4
(B) 5
(C) 6
(D) 7

last reply by CpjJwWHV • 13 years ago • asked in Computer Science And Engineering, 2011

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5.

The variable cost (V) of manufacturing a product varies according to the equation V = 4q, where q is the quantity produced. The fixed cost (F) of production of same product reduces with q according to the equation F = 100/q. How many units should be produced to minimize the total cost (V + F)? [2 mark]
(A) 5
(B) 4
(C) 7
(D) 6

last reply by CpjJwWHV • 13 years ago • asked in Computer Science And Engineering, 2011

View Comments [8 Reply]
6.

If Log (P) = (1/2) Log (Q) = (1/3) Log (R), then which of the following options is TRUE? [1 mark]
(A) P² = Q³R²
(B) Q² = R³P
(C) Q² = PR
(D) R = P²Q²

last reply by CpjJwWHV • 11 years ago • asked in Computer Science And Engineering, 2011

View Comments [13 Reply]

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