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Q:

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero ?

A) 0	B) -1
C) 1	D) none of these

Answer & Explanation Answer: A) 0

Explanation:

Average of 20 numbers = 0.

Sum of 20 numbers = (0 * 20) = 0.

It is quite possible that 19 of these numbers may be positive and if their sum is a, then 20th number is (- a).

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Filed Under: Average

Q:

Food wrapped in news paper is likely to get contaminated by

A) Magnesium	B) Alluminium
C) Lead	D) Copper

Answer & Explanation Answer: C) Lead

Explanation:

It gets contaminated by lead

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Filed Under: Biology

Q:

The average age of 36 students in a group is 14 years. When teacher's age is included to it, the average increases by one. What is the teacher's age in years ?

A) 35 years	B) 45 years
C) 51 years	D) 54 years

Answer & Explanation Answer: C) 51 years

Explanation:

Age of the teacher = (37 * 15 - 36 * 14) years = 51 years.

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Q:

Explain the function of Transmission Control Block

Answer

A TCB is a complex data structure that contains a considerable amount of information about each connection

Workspace

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Subject: Network Administration

Q:

The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person ?

A) 70 kg	B) 75 kg
C) 80 kg	D) 85 kg

Answer & Explanation Answer: D) 85 kg

Explanation:

Total weight increased = (8 x 2.5) kg = 20 kg.

Weight of new person = (65 + 20) kg = 85 kg.

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Filed Under: Average

Q:

The average of six numbers is 3.95. The average of two of them is 3.4, while the average of the other two is 3.85. What is the average of the remaining two numbers ?

A) 3.6	B) 4.6
C) 6.5	D) 7.3

Answer & Explanation Answer: B) 4.6

Explanation:

Sum of the remaining two numbers = (3.95 * 6) - [(3.4 * 2) + (3.85 * 2)]

= 23.70 - (6.8 + 7.7) = 23.70 - 14.5 = 9.20.

Required average = (9.2 / 2) = 4.6.

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Filed Under: Average

Q:

Of the four numbers, whose average is 60, the first is one-fourth of the sum of the last three. The first number is :

A) 17	B) 29
C) 36	D) 48

Answer & Explanation Answer: D) 48

Explanation:

Let the first number be x,

Then, sum of the four numbers = x + 4x = 5x.

so, 5x/4 = 60 or x = (60 * 4) / 5 = 48.

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Filed Under: Average

Q:

A cicketer bas a certain average for 10 innings, In the eleventh inning, he scorod 108 runs, thereby increasing his average by 6 runs. His new average is :

A) 44 runs	B) 46 runs
C) 48 runs	D) 49 runs

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