Probability

Mark scheme and answers · Total marks: 53

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Question 1 [1 mark]

12

Mark scheme
  • A [1] — cao 1⁄2

Accept algebraically equivalent correct forms.

Question 2 [1 mark]

310

Mark scheme
  • A [1] — cao 3⁄10

Accept algebraically equivalent correct forms.

Question 3 [1 mark]

16

Mark scheme
  • A [1] — cao 1⁄6

Accept algebraically equivalent correct forms.

Question 4 [1 mark]

0.16

Mark scheme
  • A [1] — cao 0.16

Accept algebraically equivalent correct forms.

Question 5 [1 mark]

12

Mark scheme
  • A [1] — cao 1⁄2

Accept algebraically equivalent correct forms.

Question 6 [1 mark]

35

Mark scheme
  • A [1] — cao 3⁄5

Accept algebraically equivalent correct forms.

Question 7 [1 mark]

58

Mark scheme
  • A [1] — cao 5⁄8

Accept algebraically equivalent correct forms.

Question 8 [1 mark]

0.46

Mark scheme
  • A [1] — cao 0.46

Accept algebraically equivalent correct forms.

Question 9 [2 marks]

0.8

Mark scheme
  • A [2] — cao 0.8

Accept algebraically equivalent correct forms.

Question 10 [3 marks]

4

Mark scheme
  • A [3] — cao 4

Accept algebraically equivalent correct forms.

Question 11 [1 mark]

0.7

Mark scheme
  • A [1] — cao 0.7

Accept algebraically equivalent correct forms.

Question 12 [2 marks]

136

Mark scheme
  • A [2] — cao 1⁄36

Accept algebraically equivalent correct forms.

Question 13 [2 marks]

91216

Mark scheme
  • A [2] — cao 91⁄216

Accept algebraically equivalent correct forms.

Question 14 [2 marks]

2491

Mark scheme
  • A [2] — cao 24⁄91

Accept algebraically equivalent correct forms.

Question 15 [2 marks]

11221

Mark scheme
  • A [2] — cao 11⁄221

Accept algebraically equivalent correct forms.

Question 16 [2 marks]

1439

Mark scheme
  • A [2] — cao 14⁄39

Accept algebraically equivalent correct forms.

Question 17 [2 marks]

0.2

Mark scheme
  • A [2] — cao 0.2

Accept algebraically equivalent correct forms.

Question 18 [2 marks]

740

Mark scheme
  • A [2] — cao 7⁄40

Accept algebraically equivalent correct forms.

Question 19 [2 marks]

310

Mark scheme
  • A [2] — cao 3⁄10

Accept algebraically equivalent correct forms.

Question 20 [2 marks]

0.1775

Mark scheme
  • A [2] — cao 0.1775

Accept algebraically equivalent correct forms.

Question 21 [2 marks]

16

Mark scheme
  • A [2] — cao 1⁄6

Accept algebraically equivalent correct forms.

Question 22 [2 marks]

125⁄1296

Mark scheme
  • A [2] — cao 125⁄1296

Accept algebraically equivalent correct forms.

Question 23 [2 marks]

112

Mark scheme
  • A [2] — cao 1⁄12

Accept algebraically equivalent correct forms.

Question 24 [2 marks]

8

Mark scheme
  • A [2] — cao 8

Accept algebraically equivalent correct forms.

Question 25 [2 marks]

4

Mark scheme
  • A [2] — cao 4

Accept algebraically equivalent correct forms.

Question 26 [2 marks]

344

Mark scheme
  • A [2] — cao 3⁄44

Accept algebraically equivalent correct forms.

Question 27 [2 marks]

0.3

Mark scheme
  • A [2] — cao 0.3

Accept algebraically equivalent correct forms.

Question 28 [2 marks]

56

Mark scheme
  • A [2] — cao 5⁄6

Accept algebraically equivalent correct forms.

Question 29 [2 marks]

0.028

Mark scheme
  • A [2] — cao 0.028

Accept algebraically equivalent correct forms.

Question 30 [3 marks]

0.3

Mark scheme
  • A [3] — cao 0.3

Accept algebraically equivalent correct forms.