Independent events

Mark scheme and answers · Total marks: 52

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Question 1 [1 mark]

1216

Mark scheme
  • A [1] — cao 1216

Accept algebraically equivalent correct forms.

Question 2 [1 mark]

116

Mark scheme
  • A [1] — cao 116

Accept algebraically equivalent correct forms.

Question 3 [1 mark]

3572

Mark scheme
  • A [1] — cao 3572

Accept algebraically equivalent correct forms.

Question 4 [1 mark]

12

Mark scheme
  • A [1] — cao 12

Accept algebraically equivalent correct forms.

Question 5 [1 mark]

16

Mark scheme
  • A [1] — cao 16

Accept algebraically equivalent correct forms.

Question 6 [1 mark]

12

Mark scheme
  • A [1] — cao 12

Accept algebraically equivalent correct forms.

Question 7 [1 mark]

25

Mark scheme
  • A [1] — cao 25

Accept algebraically equivalent correct forms.

Question 8 [1 mark]

0.18

Mark scheme
  • A [1] — cao 0.18

Accept algebraically equivalent correct forms.

Question 9 [1 mark]

35

Mark scheme
  • A [1] — cao 35

Accept algebraically equivalent correct forms.

Question 10 [1 mark]

0.54

Mark scheme
  • A [1] — cao 0.54

Accept algebraically equivalent correct forms.

Question 11 [1 mark]

14

Mark scheme
  • A [1] — cao 14

Accept algebraically equivalent correct forms.

Question 12 [2 marks]

0.6

Mark scheme
  • A [2] — cao 0.6

Accept algebraically equivalent correct forms.

Question 13 [2 marks]

14

Mark scheme
  • A [2] — cao 14

Accept algebraically equivalent correct forms.

Question 14 [2 marks]

0.058808

Mark scheme
  • A [2] — cao 0.058808

Accept algebraically equivalent correct forms.

Question 15 [2 marks]

12

Mark scheme
  • A [2] — cao 12

Accept algebraically equivalent correct forms.

Question 16 [2 marks]

20

Mark scheme
  • A [2] — cao 20

Accept algebraically equivalent correct forms.

Question 17 [2 marks]

136

Mark scheme
  • A [2] — cao 136

Accept algebraically equivalent correct forms.

Question 18 [2 marks]

116

Mark scheme
  • A [2] — cao 116

Accept algebraically equivalent correct forms.

Question 19 [2 marks]

2564

Mark scheme
  • A [2] — cao 2564

Accept algebraically equivalent correct forms.

Question 20 [2 marks]

0.09

Mark scheme
  • A [2] — cao 0.09

Accept algebraically equivalent correct forms.

Question 21 [2 marks]

116

Mark scheme
  • A [2] — cao 116

Accept algebraically equivalent correct forms.

Question 22 [2 marks]

11024

Mark scheme
  • A [2] — cao 11024

Accept algebraically equivalent correct forms.

Question 23 [2 marks]

425

Mark scheme
  • A [2] — cao 425

Accept algebraically equivalent correct forms.

Question 24 [2 marks]

14

Mark scheme
  • A [2] — cao 14

Accept algebraically equivalent correct forms.

Question 25 [2 marks]

0.18

Mark scheme
  • A [2] — cao 0.18

Accept algebraically equivalent correct forms.

Question 26 [2 marks]

n = 10 or n = 25

Mark scheme
  • A [2] — cao n = 10 or n = 25

Accept algebraically equivalent correct forms.

Question 27 [2 marks]

425

Mark scheme
  • A [2] — cao 425

Accept algebraically equivalent correct forms.

Question 28 [2 marks]

0.6

Mark scheme
  • A [2] — cao 0.6

Accept algebraically equivalent correct forms.

Question 29 [3 marks]

0.6

Mark scheme
  • A [3] — cao 0.6

Accept algebraically equivalent correct forms.

Question 30 [4 marks]

10

Mark scheme
  • A [4] — cao 10

Accept algebraically equivalent correct forms.