Exams Questions and Answers

Q:

Find the value of $x^{3} - y^{3}$ , if x - y = 4 and xy = 12.

A) 198	B) 208
C) 218	D) 228

Answer & Explanation Answer: B) 208

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Q:

Determine the value of a/b + b/a when a + b = 8 and ab = 4.

A) 4	B) 8
C) 12	D) 14

Answer & Explanation Answer: D) 14

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Q:

Find the unit place digit in the expression given below:

1! + 2! + 3! + 4! + ..... + 20!

A) 5	B) 0
C) 3	D) 9

Answer & Explanation Answer: C) 3

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Q:

The addition of a rational number and its reciprocal is 61/30. Calculate the number.

A) 5/6, 6/5	B) 5/6, 7/5
C) 7/6, 6/5	D) 7/6, 7/5

Answer & Explanation Answer: A) 5/6, 6/5

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Q:

Computer software can be defined as

A) the interaction between the computer and its database	B) an interface between the computer and the network
C) the computer and its associated equipment	D) the instructions that tell the computer what to do

Answer & Explanation Answer: D) the instructions that tell the computer what to do

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Q:

What produces the striations of a skeletal muscle cell?

Answer

The striations are a result of the A bands of sarcomeres appearing as relatively wide, dark stripes under the microscope, which alternate with narrower, lighter colored stripes formed by the I bands.

The striations of skeletal muscle are created by the organization of actin and myosin filaments resulting in the banding pattern of myofibrils.

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Q:

Which of the following cube in the answer figure cannot be based on the unfolded cube in the question figure?