The number 0.373 is a type of:

irrational, terminating decimal

irrational, terminating recurring decimal

Consider the following list of numbers: In this list there are:

3 rational and 4 irrational numbers

5 rational and 2 irrational numbers

2 rational and 5 irrational numbers

4 rational and 3 irrational numbers

1 rational and 6 irrational numbers

9a Maths - Number Topic Revision Quiz | Attempts: 325

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| By Almonr

Almonr

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Quizzes Created: 1 | Total Attempts: 325

| Attempts: 325

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1/15 Questions

The number 0.373 is a type of:
- Rational, recurring decimal
- Irrational, recurring decimal
- Rational, terminating decimal
- Irrational, terminating decimal
- Irrational, terminating recurring decimal

About This Quiz

Complete this quiz to test your knowledge on rational / irrational numbers, decimals and fractions, significant figures, scientific notation and factorials and permutations.

2.

Consider the following list of numbers: In this list there are:
- 5 rational and 2 irrational numbers
- 2 rational and 5 irrational numbers
- 4 rational and 3 irrational numbers
- 3 rational and 4 irrational numbers
- 1 rational and 6 irrational numbers
Correct Answer

A. 3 rational and 4 irrational numbers

Explanation

The first, second and fourth numbers in the list are rational whereas the rest are not.

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3.

$as a fraction in its simplest form is: - ProProfs$

as a fraction in its simplest form is:
- 55/99
- 55/100
- 55/90
- 11/18
- 5/9
Correct Answer

A. 5/9

Explanation

Let x = 0.555555555...
Let 10x = 5.5555555...

10x - x = 5.55555555..-0.55555555...
9x = 5

therefore x = 5/9

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1
4.

$As a fraction in its simplest form is: - ProProfs$

As a fraction in its simplest form is:
- 123/100
- 122/99
- 123/10
- 1 and 23/100
- 1 and 22/100
Correct Answer

A. 122/99

Explanation

Let x = 1.232323232323...
100x = 123.2323232323...

100x - x = 123.232323232323...-1.2323232323...

99x = 122

x = 122/99

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5.

The number 2.746 written to three significant figures is:
- 3
- 2.7
- 2.8
- 2.74
- 2.75
Correct Answer

A. 2.75

Explanation

All digits in the original number are significant, therefore it simply needs to be rounded to 3 digits (2 decimal places)

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6.

12.157 66 rounded correctly to 3 significant figures is:
- 12.157
- 12.158
- 10.0
- 12.2
- 12.1
Correct Answer

A. 12.2

Explanation

All digits in the original number are significant, therefore it simply needs to be rounded to 3 digits (1 decimal place)

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7.

The value of 1240 – 240 ÷ 2.4 x 0.5 + 1.9 found by first rounding each value to one significant figure is:
- 1191.9
- 1000
- 952
- 902
- 210.2333333333333....
Correct Answer

A. 952

Explanation

To one significant figure, the sum would look like this:
1000 - 200 /2 x 0.5 + 2
Follow BODMAS: 952

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8.

The number –0.000976 in scientific notation is:
- –0.976E4
- –97.6E-4
- 9.76E-4
- -9.76E-4
- -9.76E4
Correct Answer

A. -9.76E-4

Explanation

Move the decimal point to create a number between 1 and 10.
Then multiply that number by 10 to a power to show the magnitude
ie. move the decimal point 4 places, making the number bigger, so multiply by 10 to the power of -4 (E represents "10 to the power of")

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1
9.

861 000 000 written in standard form (in scientific notation) is:
- 8.6E8
- 86.1E7
- 8.61E-8
- 0.861E10
- 8.61E8
Correct Answer

A. 8.61E8

Explanation

Move decimal point 8 places to the left, so multiply 8.61 by 10 to the power of 8.

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10.

written in scientific notation is:
- 1.39E3
- 1391.6508
- 1.39E-3
- 1.94E6
- 1.39 x 1000
Correct Answer

A. 1.39E3

Explanation

First evaluate what is under the square root sign, then write that answer (1390)in scientific notation.

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11.

8! is equal to:
- 64
- 5! + 3!
- 40320
- 720
- 16777216
Correct Answer

A. 40320

Explanation

8! = 8x7x6x5x4x3x2x1 = 40320

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12.

7! / 2! is equal to:
- 7x6x5x4x3
- 84
- 120
- (7x6) / (5x4x3x2x1)
- 3.5!
Correct Answer

A. 7x6x5x4x3

Explanation

7!/2! = (7x6x5x4x3x2x1)/(2x1) cancel out common values = 7x6x5x4x3

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1
13.

A painter is to paint the five circles of the Olympic flag. He cannot remember the colours touse for any of the circles, but he knows they should all be different. He has 8 paint colours to choose from, how many arrangements of 5 colours can he possibly have?
- 336
- 6720
- An unlimited number
- 25
- 40
Correct Answer

A. 6720

Explanation

8 objects (n = 8), choosing 5 colours (r = 5)
nPr = 8P5 = 6720

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14.

Standard Victorian number plates for cars are generally made up of 3 letters and then 3 numbers. How many different number plates can be made given that there are no restrictions on letter or digit arrangements?
- 676 000
- 468 000
- 17 576 000
- 26! + 10!
- 82
Correct Answer

A. 17 576 000

Explanation

Multiply the possibilities:
letters: 26 x 26 x 26 x 10 x 10 x 10 = 17 576 000

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15.

Refer to the previous question. By how many will the number of possible number plates decrease if no letters or numbers can be repeated?
- 11 232 000
- 6 344 000
- 675 997
- 408 000
- 165 765 600
Correct Answer

A. 6 344 000

Explanation

With no restrictions there are 17 576 000 possible arrangements. With restrictions there are 26 x 25 x 24 x 10 x 9 x 8 = 11 232 000 arrangements.
The decrease is 17 576 000 - 11 232 000 = 6 344 000

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Quiz Edited by
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Feb 22, 2010

Quiz Created by
Almonr

9a Maths - Number Topic Revision Quiz

The number 0.373 is a type of:

Quiz Preview

Consider the following list of numbers: In this list there are:

as a fraction in its simplest form is:

As a fraction in its simplest form is:

The number 2.746 written to three significant figures is:

12.157 66 rounded correctly to 3 significant figures is:

The value of 1240 – 240 ÷ 2.4 x 0.5 + 1.9 found by first rounding each value to one significant figure is:

The number –0.000976 in scientific notation is:

861 000 000 written in standard form (in scientific notation) is:

written in scientific notation is:

8! is equal to:

7! / 2! is equal to:

A painter is to paint the five circles of the Olympic flag. He cannot remember the colours touse for any of the circles, but he knows they should all be different. He has 8 paint colours to choose from, how many arrangements of 5 colours can he possibly have?

Standard Victorian number plates for cars are generally made up of 3 letters and then 3 numbers. How many different number plates can be made given that there are no restrictions on letter or digit arrangements?

Refer to the previous question. By how many will the number of possible number plates decrease if no letters or numbers can be repeated?