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01.

Which of the following is equal to 3.14 * 106 ?

A.	314	B.	3140
C.	3140000	D.	None of these

Answer and Explanation

Answer: 3140000

Explanation:
3.14 * 106 = 3.140000 * 1000000 = 3140000

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02.

0.000006723 when expressed in scientific notation is

A.	6723 * 10-5	B.	67.23 * 10-7
C.	6.273 * 10-6	D.	None of these

Answer and Explanation

Answer: None of these

Explanation:
0.000006723 = (0.000006723 * 106) / 106 = 6.723 / 106 = 6.723 * 10-6

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03.

. If 1.125 * 10k = 0.001125. then the value of k is :

A.	-4	B.	-3
C.	-2	D.	-1

Answer and Explanation

Answer: -3

Explanation:
10k = 0.001125 / 1.125 â€“ 1.125 / 1125 = (1.125 * 103) / (1125 * 103) = 1/103 = 10-3

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04.

The value of (489.1375 x 0.0483 x 1.956) / (0.0873 x 92.581 x 99.749 ) is closet to:

A.	0.006	B.	0.06
C.	0.6	D.	6

Answer and Explanation

Answer: 0.06

Explanation:
(489.1375 x 0.0483 x 1.956) / (0.0873 x 92.581 x 99.749) = (489 x 0.05 x 2) / (0.09 x 93 x 100)

= (489) / (9 x 93 x 10)

= 163 / 279 x 1 / 10

= 0.58 / 10

= 0.058 = 0.06.

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05.

If 4.5x = 0.04y, then find the value of {(y - x) / (y + x)}

A.	23/27	B.	22.3/227
C.	2230/227	D.	223/227

Answer and Explanation

Answer: 223/227

Explanation:

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06.

A.	3.42	B.	6.1
C.	4.67	D.	None of these

Answer and Explanation

Answer: 6.1

Explanation:

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07.

A.	0.2	B.	0.02
C.	2	D.	0.05

Answer and Explanation

Answer: 0.2

Explanation:

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