# 9a Maths - Number Topic Revision Quiz

15 Questions | Total Attempts: 140  Settings  Complete this quiz to test your knowledge on rational / irrational numbers, decimals and fractions, significant figures, scientific notation and factorials and permutations.

• 1.
The number 0.373 is a type of:
• A.

Rational, recurring decimal

• B.

Irrational, recurring decimal

• C.

Rational, terminating decimal

• D.

Irrational, terminating decimal

• E.

irrational, terminating recurring decimal

• 2.
Consider the following list of numbers: In this list there are:
• A.

5 rational and 2 irrational numbers

• B.

2 rational and 5 irrational numbers

• C.

4 rational and 3 irrational numbers

• D.

3 rational and 4 irrational numbers

• E.

1 rational and 6 irrational numbers

• 3.
as a fraction in its simplest form is:
• A.

55/99

• B.

55/100

• C.

55/90

• D.

11/18

• E.

5/9

• 4.
As a fraction in its simplest form is:
• A.

123/100

• B.

122/99

• C.

123/10

• D.

1 and 23/100

• E.

1 and 22/100

• 5.
The number 2.746 written to three significant figures is:
• A.

3

• B.

2.7

• C.

2.8

• D.

2.74

• E.

2.75

• 6.
12.157 66  rounded correctly to 3 significant figures is:
• A.

12.157

• B.

12.158

• C.

10.0

• D.

12.2

• E.

12.1

• 7.
The value of 1240 – 240 ÷ 2.4 x 0.5 + 1.9 found by first rounding each value to one significant figure is:
• A.

1191.9

• B.

1000

• C.

952

• D.

902

• E.

210.2333333333333....

• 8.
The number –0.000976 in scientific notation is:
• A.

–0.976E4

• B.

–97.6E-4

• C.

9.76E-4

• D.

-9.76E-4

• E.

-9.76E4

• 9.
861 000 000 written in standard form (in scientific notation) is:
• A.

8.6E8

• B.

86.1E7

• C.

8.61E-8

• D.

0.861E10

• E.

8.61E8

• 10.
written in scientific notation is:
• A.

1.39E3

• B.

1391.6508

• C.

1.39E-3

• D.

1.94E6

• E.

1.39 x 1000

• 11.
8! is equal to:
• A.

64

• B.

5! + 3!

• C.

40320

• D.

720

• E.

16777216

• 12.
7! / 2! is equal to:
• A.

7x6x5x4x3

• B.

84

• C.

120

• D.

(7x6) / (5x4x3x2x1)

• E.

3.5!

• 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?
• A.

336

• B.

6720

• C.

An unlimited number

• D.

25

• E.

40

• 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?
• A.

676 000

• B.

468 000

• C.

17 576 000

• D.

26! + 10!

• E.

82

• 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?
• A.

11 232 000

• B.

6 344 000

• C.

675 997

• D.

408 000

• E.

165 765 600

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