IGCSE Probability from a Frequency Table

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Mathematics

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10th Grade

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Fiona Davidson

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13 Slides • 21 Questions

IGCSE Probability from a Frequency Table

RECAP: Angles in Polygons

Understand the meaning of Relative Frequency

Apply the 'AND' and 'OR' rules in probability

Multiple Choice

What is the nth term in Q2?

2n+3

3n+2

5n-2

5n+3

Multiple Choice

What is 43 x 2.5 ?

106

107.5

86.5

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Multiple Choice

What do the interior angles in a Hexagon add up to?

4 x 180 = 720

5 x 180 = 900

6 x 180 = 1080

7 x 180 = 1260

Multiple Choice

What do the exterior angles in a Hexagon add up to?

4 x 180 = 720

5 x 180 = 900

ALL EXTERIOR ANGLES ADD TO 360

7 x 180 = 1260

Multiple Choice

What do the INTERIOR angles in a Heptagon add up to?

4 x 180 = 720

5 x 180 = 900

6 x 180 = 1080

7 x 180 = 1260

Multiple Choice

What do the EXTERIOR angles in a Heptagon add up to?

4 x 180 = 720

5 x 180 = 900

ALL EXTERIOR ANGLES ADD TO 360

7 x 180 = 1260

Fill in the Blanks

Type answer...

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Multiple Choice

The EXTERIOR angle of a regular polygon is $45^o$
How many sides does the polygon have?

$360\div45\ =\ 8$

$360\ -\ 45=315$

$180\div45=4$

$6$

Multiple Choice

The EXTERIOR angle of a regular polygon is $18^o$
How many sides does the polygon have?

$180\div18\ =\ 10$

$360\ -\ 18=342$

$360\div18=20$

$15$

Multiple Choice

The interior angle : exterior angle of a polygon are in the ratio 10:8
What is the size of the exterior angle?

100

180

Multiple Choice

The interior angle : exterior angle of a polygon are in the ratio 7:2
What is the size of the exterior angle?

140

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'OR' & 'AND'

Often in Probability questions you will see the words 'OR' or 'AND'

When we have independent events

OR means ADD!

AND means MULTIPLY!

Fill in the Blanks

Type answer...

IGCSE Probability from a Frequency Table

RECAP: Angles in Polygons

Understand the meaning of Relative Frequency

Apply the 'AND' and 'OR' rules in probability

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