Federal Civil Service Commission Past Questions and Answers (1-50)

 Federal Civil Service Commission Past Questions and Answers (1-50)

1)

A rectangle is twice as long as it is wide. If the width is a, what is the length of a diagonal?

A.

B.

C.

D. 3a

E. 5a

View answer

2)Last year Jose sold a painting for $2000. If he made 25% profit on the sale, how much had he paid for the painting?

A. $1200. B $1500 C $1600 D. $2400 E. $2500

View answer (2)

Jose made 25% profit, so if he bought the painting for x, he sold it for: x +0.25x = 1.25x = 2000 ⇒x= 2000+ 1.25 = 1600.

The answer is (C).

3) In the figure below what is the value of b?

A. 30. B. 36. C. 45 D. 60 E. 72

View answer

Since vertical angles have the same measure, c=d, d = a, and b = a-ba = 2b. Therefore, c = d = a = 2b. Also, the sum of the measures of all six angles is 3600, so a+b+c+d+a-b+d=2a+c+2d = 360. Replacing c, d, and a by 2b yields 10b = 360 ⇒b=36.

The answer is (B)

4)A lacrosse team raised some money. The members used 74% of the money to buy uniform, 18% for equipment, and the remaining $216 for a team party. How much money did they raise?

A. 2400 B. 2450.C. 2500 D. 2600 E. 2700

View answer

SINCE 74% +18% = 92%, THE $216 spent on the party presents the other 8% of the money raised. Then: 0.08m = 216 m = 216 +0.08 = 2700. The answer is (E).

5)In the figure below, what is the sum of the degree measures of all of the marked angles?

A. 600 B. 620. C. 700. D. 720. E. 750

View answer

Each of the 10 marked angles is an exterior angle of the pentagon. If you take one angle at each vertex, the sum of the degree measures of those five angles is 360; the sum of the degree measures of the other five also is 360: 360 + 360 = 720.

The answer is (720).

11) If the difference between the measures of the two smaller angles of a right triangle is 200, what is the measure, in degrees, of the smallest angle?

A. 30 B. 35. C. 40 D. 45 E. 50

View answer

12) What is the perimeter of Triangle ABC

A. 48. B. C. D. 72. E. It cannot be determined from the information given

View answer

13) What is the area of Triangle BED in the figure below were ABCD is a triangle?

A. 12. B. 24. C. 36. D. 48. E. 60

View answer

14) What is the value of PS in the triangle below?

A. B. 10. C. 11. D. 13. E

View answer

Use the Pythagorean Theorem twice, unless you recognize the common right triangle in the figure. Since PR = 20 and QR = 16, PQR is a 3x-4x-5x right triangle with x = 4. Then PQ = 12, and PQS is a right angle triangle whose legs are 5 and 12. The hypotenuse, PS, therefore is 13. The answer is (D).

15)

A. 40

B. 45

C. 50

D. 55

E. 57

10/316

View answer

Solution

Since lines I and k are parallel, the angle marked y in the given diagram and the sum of the angles marked x and 45 are equal:

Y=x+45y-x=45.the answer is (45).

16)

In an office there was a small cash box. One day Ann took half of the money plus $1 more. Then Dan took half of the money plus $1 more. Stan then took the remaining $11. How many dollars were originally in the box?

A. $50

B. $45

C. $42

D. $40

E. $38

View answer

Solution

You can avoid some massy algebra by working backwards. Put back the $11 Stan took; then put back the extra $1 that Dan took. There is now $12, which means that, when Dan took his half, he took $12. Put that back. Now there is $24 in the box. Put back the extra $1 that Ann took. The box now has $25, so before Ann took her half, there was $50. The answer is ($50).

17)

Each of the 10 players on the basketball team shot 100 free throws, and the average number of baskets made was 75. When the highest and lowest scores were eliminated the average number of baskets for the remaining 8 players was 79.What is the smallest number of baskets anyone could have made?

A. 22. B. 20. C. 18. D. 16. E. 14

View answer

Since the average of all 10 players was 75, the total number of baskets made was 10 x 75 = 750. Also, since 8 of the player had an average of 79, they made a total of 8 x 79 = 632 points. The other 2 players, therefore, made 750-632 = 118 baskets. The most baskets that the player with the highest number could have made was 100, so the player with the lowest number had to have made at least 18.

The answer is 18.

18)

Karen played a game several times. She received $5 every time she won and had to pay $2 every time she lost. If the ratio of the number of times she won to the number of times she lost was 3:2, and if she won a total of $66, how many times did she play the game?

A. 30

B. 35

C. 40

D. 45

E. 48

View answer

Karen won 3x times and lost 2x times, and thus played a total of 5x games. Since she got $5 every time she won, she received $5(3x) = $15x. Also, since she paid $2 for each loss, she paid out $2(2x) = $4x. Therefore, her net winning were $15x-4x= $11x, which you are told was $66. Then, 11x = 66 ⇒x=6, and so 5x = 30.

The answer is 30.

19)

Since 1950, when martin graduated from high school, he has gained 2 pounds every year. In 1980 he was 40% heavier than in 1950. What percent of his 1995 weight was his 1980 weight?

A. 80

B. 85

C. 87.5

D. 90

E. 95

View answer

Solution

Let x = Martin's weight in 1950. By 1980, he had gained60 pounds (2 pounds per

year for 30 years) and was 40% heavier:

60 = 0.40x x = 60 +0.4 = 150. In 1980, he weighed 210 pounds, 15 years later, in 1995, he weighed 240: 210/240=7/8=87.5%. The answer is C.

20)

Henry drove 100 mile to visit a friend. If he had driven 8 mile per hour faster than he did, he would have arrived in of the time he actually toke. How many minute did the trip take?

A. 100

B. 120

C. 125

D. 144

E. 150

View answer

21) Two printing presses working together can complete a job in 2.5 hours. Working alone, press A can do the job in 10 hours. How many hours will press B take to do the job by itself?

A. 10/3

B. 4

C. 5

C. 25/4

E. 15/12

View answer

.Multiply each term by 10x: 2.5x + 25 = 10x

Subtract 2.4x from each other: 25 = 7.5x

.Divide each side by 7.5: x = 3 hours. The answer is A.

22)

Which of these is a domestic animal.

A. Cat

B. snake

C. Lion

D. Giraffe

View answer

Answer A.

23)

We keep food in the

A. Shelve

B. cupboard

C. Fridge

D. Store

View answer

Answer C

24)

Scientists perform Experiments in the

A. Library

B. Lavatory

C. Laboratory

D. Lobby

View answer

Answer C

25)

Which of these seasons of the year is not present in Nigeria?

A. Harmattan

B. Dry

D. Raining

D. Winter

View answer

Answer D

31) The sun or any star and the planets which move round it is referred to as

A. Sunny system

B. Solar System

C. Solar Plexus

D. Solar power

View answer

Answer B

32) How many months of the year have less than 31 days?

A. 1

B. 3

C. 5

D. 7

View answer

Answer C

33) The patient was taken to the

A. Labour room

B. Laboratory

C. Theatre

D. Ward

View answer

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Answer C

34) A female sheep is called

A. Kid

B. Fingerling

C. Ewe

D. Ram

View answer

Answer C

35) Which of these options is the act of killing oneself deliberately.

A. Poisoning

B. Suicide

C. Homicide

D. Patricide

View answer

Answer B

36) A distant object can appear closer if a

is used.

A. Microscope

B. Telescope

C. Stethoscope

D. Microphone

View answer

Answer B

37) The examination takes place quarterly means the examination takes place

A. Once in four months

B. Once in three months

C. Only in four places

D. Only in three places

View answer

Answer B

38) You can catch a glimpse of the queen means

A. You can follow the queen

B. You can get a brief look at the queen

C. The glimpse belong to the queen

D. Queen can be seen always

View answer

Answer B

39) Which of these describe the way of life of a group of people.

A. Believe

B. religion

C. Culture

D. Food

View answer

Answer C

40) Which of these is not a type of religion.

A. Buddhism

B. Christianity

C. Cannibalism

D. Islam

View answer

Answer C

41) The bony framework of an animal is its

A. Shape

B. Skeleton

C. Image

D. Archeologist

View answer

Answer B

42)

Common salt is chemically called

A. Table Salt

B. Sodium chloride

C. food salt

D. Sodium Carbonate

View answer

Answer B

43)

Iron can be prevented from rusting by

A. Adding water

B. Painting

C. Exposure to air

D. Adding water and air

View answer

Answer B

44)

To be able to sing the anthem I must know the

A. Vocals

B. Choir

C. Lyrics

D. Title

View answer

Answer C

45)

Which of these diseases is caused by tse - tse fly.

A. Cholera

B. Dysentery

C. Sleeping sickness

D. Malaria

View answer

Answer C

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