F5 Math Yearly Exam Paper 2



1. Which of the following graphs shows that y is partly constant and partly varies directly as x?

A. B.

C. D.

2. Suppose (2x – y)[pic](x + y). Which of the following is true?

A. y[pic]x

B. y[pic][pic]

C. y[pic]x2

D. y[pic][pic]

3. The following table shows several pairs of x and y.

|x |1 |2 |4 |6 |

|y |3 |12 |48 |108 |

Which of the following is true?

A. y[pic]x

B. y[pic][pic]

C. y[pic]x[pic]

D. y[pic](x + 1)

4. Find the minimum value of k such that the simultaneous equations [pic] have real solutions.

A. –10

B. 10

C. –5

D. 5

5. Which of the following points lie(s) inside the circle C : x2 + y2 + 4x + 16y + 28 = 0?

I. P(0, (14)

II. Q((4,2)

III. R((3, (4)

IV. S((4, (2)

A. II only

B. III only

C. II and III only

D. I and IV only

6. In the figure, the graph of y = g(x) is obtained by translating the graph of y = x2 – 2x in the direction of the x-axis. If A(0, 3) lies on the graph of y = g(x), find the symbolic representation of g(x).

[pic]

A. g(x) = x2 – 1

B. g(x) = x2 + 4x + 3

C. g(x) = x2 – 8x + 15

D. g(x) = x2 – 4x + 3

7. Solve [pic].

A. x = 2

B. x = 3

C. x = [pic]

D. x = [pic]

8.

[pic]

In the figure, the circle touches the y-axis, the equation of the circle is

A. x2 + y2 + 14x + 12y – 36 = 0.

B. x2 + y2 – 14x – 12y + 36 = 0.

C. x2 + y2 + 7x – 6y + 18 = 0.

D. x2 + y2 – 7x + 6y – 18 = 0.

9. An insect crawls on the inner surface of a cylindrical plastic bottle from point A to point B with the shortest path.

[pic]

The plastic bottle is cut and unfolded as a flat surface. Which of the following figures shows the locus of the insect?

A. B.

C. D.

10. A shopkeeper has 10 keys, only one of which can open the shop. If the keys are chosen at random one by one without repetition, find the probability that he can open the door in less than 3 trials.

A. [pic]

B. [pic]

C. [pic]

D. [pic]

11.

[pic]

The equations of lines L1 and L2 are y = –1 and x = 1 respectively. A moving point P(x , y) maintains an equal distance from L1 and L2. Which of the following is the equation of the locus of P?

I. x – y = 0

II. x + y = 0

III. x – y = 2

A. II only

B. III only

C. I and III only

D. II and III only

12. Which of the following box-and-whisker diagrams may represent the data 17, 13, 19, 21, 17, 23?

A.

[pic]

B.

[pic]

C.

[pic]

D.

[pic]

13. In the figure, [pic], [pic], BD bisects [pic].

[pic]

[pic]

A. [pic].

B. [pic].

C. [pic].

D. [pic].

14.

[pic]

Find ∠PSR.

A. 79.6(, cor. to 3 sig. fig.

B. 82.3(, cor. to 3 sig. fig.

C. 84.8(, cor. to 3 sig. fig.

D. 90(

15.

[pic]

In the figure, AB is a flagpole with height 10 m vertically erected on an inclined plane with an inclination of 15(. Given that the angle between sun rays and the horizontal plane is 65(, find the length of the shadow BF, correct to 3 significant figures.

A. 4.29 m

B. 4.66 m

C. 5.52 m

D. 7.09 m

16.

[pic]

In the figure, the bearings of B and C from A are 140( and 200( respectively, and the bearing of C from B is 245(. Given that B and C are 10 km apart, find the distance between A and C, correct to 3 significant figures.

A. 9.43 km

B. 9.73 km

C. 11.2 km

D. 12.0 km

17.

[pic]

In the figure, VABCD is a pyramid whose base is a rectangle. M is the mid-point of AB and VM is perpendicular to the plane ABCD. Given that AB = 10 cm, BC = 6 cm and VM = 8 cm, find the angle between VC and the plane ABCD, correct to the nearest degree.

A. 44(

B. 46(

C. 58(

D. 61(

18.

[pic]

The dimension of a card is 15 cm ( 35 cm. When two identical cards stand on a table as shown in the diagram, the angle between them is [pic]. Calculate the angle between plane FAD and the table.

A. 63.6(

B. 66.6(

C. 69.6(

D. 72.6(

19.

[pic]

The figure shows the cumulative frequency curve of two data sets, A and B. Which of the following must be correct?

I. Median of A > median of B.

II. Range of A > range of B.

III. Inter-quartile range of A = inter-quartile

range of B.

A. I and II only

B. I and III only

C. II and III only

D. I, II and III

20. The mean and the standard deviation of the lengths of the rolls of toilet paper of a brand are 2 400 cm and 17.2 cm respectively. If the lengths of the rolls of toilet paper of this brand are normally distributed, find the percentage of the rolls of toilet paper with lengths less than 2 365.6 cm.

(Assume that in a normal distribution, 68%, 95% and 99.7% of the data lie within one, two and three standard deviations respectively from the mean.)

A. 2.35%

B. 2.5%

C. 97.5%

D. 100%

21. Given two groups of numbers:

Group A: a + 1, a + 2, a + 3

Group B: b + 1, b + 2, b + 3

where [pic] and [pic] are the means of the group A and B respectively, [pic] and [pic] are the standard deviations of group A and B respectively. If a > b, which of the following is true ?

A. [pic] and [pic]

B. [pic] and [pic]

C. [pic] and [pic]

D. [pic] and [pic]

22. Suppose z varies jointly as x and the square root of y. If x increases by 8% and y decreases by 19%, find the percentage change of z.

A. Decreased by 2.8%

B. Decreased by 7.2%

C. Decreased by 11%

D. Decreased by 10.2%

23. Suppose y varies directly as x. Which of the following must be true?

I. y will be increased by 10 when x is increased by 10.

II. y will be decreased by 10% if x is

decreased by 10%.

III. y[pic]varies directly as x[pic].

A. II only

B. I and II only

C. II and III only

D. I, II and III

24. In the figure, the circle C : x2 + y2 ( 8x ( 6y + 12 = 0 and the straight line L intersect at A and B. If the straight line L divides the circle C into two equal parts, find the equation of L.

[pic]

A. [pic]

B. [pic]

C. [pic]

D. [pic]

25. If the straight line y = mx + 6 is a tangent to the circle x2 + y2 = 12, find the possible values of m.

A. [pic] or [pic]

B. [pic] or [pic]

C. [pic] or [pic]

D. [pic] or [pic]

26. In the figure, C is a moving point. OACB is a quadrilateral. Which of the following dotted lines shows the locus of C such that the area of OACB is fixed?

[pic]

A. B.

C. D.

27.

[pic]

G(0 , 3) and H(5 , 0) are two points in a rectangular coordinate plane. Point P(x , y) moves such that PG ( PH. Find the equation of the locus of P.

A. 3x + 5y – 15 = 0

B. 5x – 3y – 8 = 0

C. x2 + y2 – 5x – 3y = 0

D. x2 + y2 – 10x – 6y = 0

28.

[pic]

Find ∠CDA.

A. 77.4(, cor. to 3 sig. fig.

B. 77.6(, cor. to 3 sig. fig.

C. 78(

D. 78.2(, cor. to 3 sig. fig.

29.

[pic]

In the figure, ABD is a triangle. Find (, correct to 3 significant figures.

A. 50.6(

B. 52.0(

C. 54.9(

D. 58.1(

30.

[pic]

In the figure, ABCDEFGH is a cube and the diagonals BE and CF intersect at X. If ∠BXC = ( , find [pic].

A. [pic]

B. [pic]

C. [pic]

D. [pic]

31. The box-and whisker diagram shows the marks distribution of students in Chinese and English examination.

[pic]

From the diagram above, which of the following are correct?

I. The ranges of marks of the students in both examinations are the same.

II. The inter-quartile range of marks of the students in Chinese examination is less than that of English examination.

III. The median mark of the students in Chinese examination is higher than that in English examination

A. I and II only

B. II and III only

C. I and III only

D. I, II and III

32. Wai Ming scores p in a singing contest. Given that the mean mark of the contest is 65, the standard deviation is 6.2 while his standard score is –1.4. Find the value of p, correct to the nearest integer.

A. 52

B. 56

C. 66

D. 74

33. It is given that the data 50, 69, a, 101, 129, b, and 133 are arranged in ascending order. Their mean is 98 and their standard deviation is c, where a, b and c are constants. If the datum 101 is deleted, which of the following must be correct?

I. New mean < 98

II. New standard deviation < c

III. New range = 83

A. I only

B. III only

C. I and II only

D. I and III only

34. The figure shows the histograms of three frequency distributions. Arrange their standard deviations in ascending order of magnitude.

(1) (2) (3)

(3)

A. (1), (2), (3) B. (1), (3), (2)

C. (2), (1), (3) D. (3), (2), (1)

35.

[pic]

In the figure, the circle passes through O(0 , 0), P(0 , 3) and Q(–4 , 0) with the centre R. Which of the following must be correct?

I. The coordinates of the centre are (–2 , 1.5).

II. R lies on the straight line[pic].

III. OR is perpendicular to PQ.

A. I only

B. I and II only

C. I and III only

D. II and III only

36.

[pic]

A tetrahedron ABCD with A, B and C on the horizontal plane and D vertically above A has volume of [pic] Given that AB = 12 cm, AD = 5 cm, [pic] and [pic] calculate (BDC.

A. [pic]

B. [pic]

C. [pic]

D. [pic]

37. The mean, the range and the inter-quartile range of a set of data are x, y and z respectively. If each datum is first multiplied by 4 and 3 is then added to each, find the new mean, range and inter-quartile range.

Mean Range Inter-quartile range

A. 4x + 3 4y 4z

B. [pic] 3y – 4 4z + 3

C. 4x + 3 [pic] 4z + 3

D. 3x + 4 y z

38. F(k , 0) is a point on the x-axis. When the point P(x , y) moves, it maintains an equal distance from point F and the y-axis. If the equation of the locus of P is y2 = 4x – 4, find k.

A. 0

B. 1

C. 2

D. 4

39.

[pic]

In the figure, a triangular board ABC stands vertically on the horizontal ground along the east-west direction. F is a point on BC such that AF[pic]BC, where BC = 3 m, AF = 1 m. When the sun shines from N40(W with an angle of elevation 25(, the shadow of the board on the horizontal ground is △BDC. Find the area of the shadow △BDC, correct to 3 significant figures.

A. 2.07 m2

B. 2.46 m2

C. 2.72 m2

D. 3.22 m2

40.

[pic]

In right-angled [pic],

[pic].

A moving line L cuts AB and BC at M and N respectively. It is given that

area of[pic] (area of [pic]).

Find the minimum value of MN.

A. 2

B. 3

C. 4

D. 5

END OF PAPER

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Frequency

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Frequency

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QUEEN’S COLLEGE

Yearly Examination, 2010-2011

Mathematics Paper II

Secondary 5 Date: 23 June, 2011.

Time: 8:30-9:30

Full Marks: 80

[pic]

1. Write down the information required in the spaces provided on[pic][?]+,^_acjsuxœ?Ÿ¡¢£¶·¸¹º»¾¿âãçèéüýóâÕÇÕÇÕ¶¬Õ¶¬ÕÇÕÇÕ›Õ?n›ÕÇÕÇÕcÕÇ›Õ?h*.mCJOJQJo([pic]%j the Answer Sheet.

2. When told to open this question paper, check that all the questions are there. Look for the words “END OF PAPER” after the last question.

3. Answer all questions. All the answers should be marked on the answer sheet provided.

4. You should mark only ONE answer for each question. Two or more answers will score no marks.

5. There are 40 questions in this paper. All questions carry equal marks.

6. The diagrams in this paper are not necessarily drawn to scale.

Frequency

QUEEN’S COLLEGE

Yearly Examination, 2010-2011

Form 5 Mathematics Paper II

Answer Sheet

Question

Number |

A |

B |

C |

D |Question

Number |

A |

B |

C |

D | |1 |√ | | | |21 | | | |√ | |2 |√ | | | |22 |√ | | | | |3 | | |√ | |23 | | |√ | | |4 | | |√ | |24 | | | |√ | |5 | |√ | | |25 | |√ | | | |6 | | | |√ |26 | |√ | | | |7 |√ | | | |27 | | |√ | | |8 | |√ | | |28 | |√ | | | |9 | | |√ | |29 |√ | | | | |10 |√ | | | |30 | |√ | | | |11 | | | |√ |31 | | | |√ | |12 | | |√ | |32 | |√ | | | |13 | | | |√ |33 | | | |√ | |14 | | |√ | |34 | |√ |√ | | |15 | | |√ | |35 | |√ | | | |16 | | |√ | |36 |√ | | | | |17 | |√ | | |37 |√ | | | | |18 | | |√ | |38 | | |√ | | |19 | | | |√ |39 | |√ | | | |20 | |√ | | |40 |√ | | | | |

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