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1: The probability that Kodjo and Adoga pass an examination are ¾ and 3/5 respectively. Find the probability of both boys failing the examination.

(a) 1/10

(b) 3/10

(c) ½

(d) 2/3

2: The mean of 20 observations in an experiment is 4. If the observed largest value is 23, Find the mean of the remaining observations.

(a) 4

(b) 3

(c) 2.85

(d) 2.60

(a) 2/11

(b) 4/11

(c) 5/11

(d) 11/13

4: P (X n Y) is

(a) 0

(b) 2/15

(c) 4/15

(d) 11/15

(a) 0

(b) 2/15

(c) 4/15

(d) 11/15

(a) 2/3

(b) 3/5

(c) 2/5

(d) 7/20

###

(a) 1/8

(b) ¼

(c) 3/8

(d) 1/2

(a) 1.5 ms-1

(b) 2.5 ms-1

(c) 25 ms-1

(d) 1.5 x 103ms-1

9: Uche and Chidi shared a sum of money on the ratio m:n. If Chidi’s share was N4,200.00, what was Uche’s share?

(a) N4,200n/m

(b) N4,200/mn

(c) N4,200m/n

(d) N4,200/n

to the fund.

(a) N1,045

(b) N605

(c) N545

(d) N490

11: A car is traveling at an average speed of 80kmh-1. Its speed in metres per second (m/s) Is

(a) 13.3m/s

(b) 22.2m/s

(c) 133.3m/s

(d) 222.2m/s

(a) N3.00

(b) N3.50

(c) N4.00

(d) N4.50

(a) 3:20

(b) 3:17

(c) 17:20

(d) 20:23

(a) 2x+2ykmh-1/3

(b) x+ ykmh-1/3

(c) x+2 ykmh-1

(d) 2x+ ykmh-1/3

(a) 45 years

(b) 72 years

(c) 108 years

(d) 216 years

[Take π=22/7] (a) 2.5

(b) 5

(c) 25

(d) 50

(a) 81

(b) 72

(c) 54

(d) 45

(a) 45 years`

(b) 48 years

(c) 60 years

(d) 74 years

19: If 4m+3n = 5, find the ratio m:n 4m-3n 3

(a) 7:4

(b) 4:3

(c) 3:4

(d) 4:7

20: If 2x : (x+1) =3:2, what is the value of x?

(a) ½

(b) 1

(c) 1½

(d) 3

(a) 2

(b) 5

(c) 7

(d) 9

(a) 1/6

(b) 1/3

(c) ½

(d) 2/3

A. 14 letters of the alphabet do not appear as the first letter of a surname.

23: What is the probability that the surname of a child picked at random from the class begins with either O and A?

(a) 5/8

(b) 7/8

(c) 9/16

(d) 14/25

24: If more than one surname begins with a letter besides A and O, how many surnames begin with the letter?

(a) 2

(b) 3

(c) 4

(d) 6

25: If a student is chosen at random from the group, what is the probability that he scored at least 6 marks?

(a) 3/20

(b) 1/5

(c) ¼

(d) 3/10

26: What is the probability that three customers waiting in a bank will be served in the Sequence of their arrival at the bank?

(a) 1/6

(b) 1/3

(c) ½

(d) 2/3

NOTE: If you would love to get the
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## Full NIS past questions and answers free download– Download the Nigerian Immigration Service recruitment past questions and answers PDF here.

**20 NIS Past questions on General Mathematics for Nigerian Immigration Recruitment**is also available for free here. Check below.

### Sample of NIS Past Questions

1: The probability that Kodjo and Adoga pass an examination are ¾ and 3/5 respectively. Find the probability of both boys failing the examination.

(a) 1/10

(b) 3/10

(c) ½

(d) 2/3

**Answer: A.**2: The mean of 20 observations in an experiment is 4. If the observed largest value is 23, Find the mean of the remaining observations.

(a) 4

(b) 3

(c) 2.85

(d) 2.60

**Answer: A.**

**3: A group of eleven people can speak either English or French or both. Seven can speak English and six can speak French. What is the probability that a person chosen at random can speak both English and French?**

(a) 2/11

(b) 4/11

(c) 5/11

(d) 11/13

**Answer: B.**

4: P (X n Y) is

(a) 0

(b) 2/15

(c) 4/15

(d) 11/15

**Answer: AA**

**5: P (X u Y) is**

(a) 0

(b) 2/15

(c) 4/15

(d) 11/15

**Answer: A**

**6: A box contains 2 white and 3 blue identical marbles. If two marbles are picked at Random, one after the other, without replacement, What is the probability of picking two marbles of different colours?**

(a) 2/3

(b) 3/5

(c) 2/5

(d) 7/20

**Answer: D**

### 7: Mrs. Jones is expecting a baby. The probability that it will be a boy is ½ and the Probability that the baby will have blue eyes is ¼. What is the probability that she will have a Blue-eyed boy?

(a) 1/8

(b) ¼

(c) 3/8

(d) 1/2

*Answer: B***8: Convert the speed 90 km per hour of a car to metres per second**

(a) 1.5 ms-1

(b) 2.5 ms-1

(c) 25 ms-1

(d) 1.5 x 103ms-1

**Answer: C**

### You are reading NIS Past Questions PDF

9: Uche and Chidi shared a sum of money on the ratio m:n. If Chidi’s share was N4,200.00, what was Uche’s share?

(a) N4,200n/m

(b) N4,200/mn

(c) N4,200m/n

(d) N4,200/n

**Answer: C***10: A husband contributes 7% of his income into a fund and his wife contributes 4% of her income. If the husband earns N5,500 per annum (p.a) and his wife earns N4,000 p.a, find the sum of their contribution*

to the fund.

(a) N1,045

(b) N605

(c) N545

(d) N490

**Answer C.**11: A car is traveling at an average speed of 80kmh-1. Its speed in metres per second (m/s) Is

(a) 13.3m/s

(b) 22.2m/s

(c) 133.3m/s

(d) 222.2m/s

**Answer: B***12: If the children share N10.50K among themselves in the ratio 6:7:8, How much is the largest share?*

(a) N3.00

(b) N3.50

(c) N4.00

(d) N4.50

**Answer: C***13: A trader makes a loss of 15% when selling an article. Find the ratio, selling price: cost price.*

(a) 3:20

(b) 3:17

(c) 17:20

(d) 20:23

**Answer: C***14: A car travels at xkm per hour for 1 hour at ykm per hour for 2 hours. Find its average speed.*

(a) 2x+2ykmh-1/3

(b) x+ ykmh-1/3

(c) x+2 ykmh-1

(d) 2x+ ykmh-1/3

**Answer: C***15: The ages of three men are in the ratio 3:4:5. If the difference between the ages of the oldest and youngest is 18 years, find the sum of the ages of the three men.*

(a) 45 years

(b) 72 years

(c) 108 years

(d) 216 years

**Answer: C.***16: A bicycle wheel of radius 42cm is rolled over a distance of 66m. How many revolutions does it make?*

[Take π=22/7] (a) 2.5

(b) 5

(c) 25

(d) 50

**Answer: C.***17: In a bag of oranges, the ratio of the good ones to the bad ones is 5:4. If the number of bad ones in the bag is 36, how many oranges are there altogether?*

(a) 81

(b) 72

(c) 54

(d) 45

**Answer: A***18: A man is four times as old as his son. The difference between their ages is 36. Find the sum of their ages.*

(a) 45 years`

(b) 48 years

(c) 60 years

(d) 74 years

*Answer: C*19: If 4m+3n = 5, find the ratio m:n 4m-3n 3

(a) 7:4

(b) 4:3

(c) 3:4

(d) 4:7

**Answer: A**20: If 2x : (x+1) =3:2, what is the value of x?

(a) ½

(b) 1

(c) 1½

(d) 3

**Answer: D***21: The ratio of the number of men to the number of women in a 20 member committee is 3:1. How many women must be added to the 20 member committee so as to make the ratio of men to women 3:2 ?*

(a) 2

(b) 5

(c) 7

(d) 9

**Answer: B.***22: What is the probability of having an odd number in a single toss of a fair die?*

(a) 1/6

(b) 1/3

(c) ½

(d) 2/3

**Answer: C****Use the following information for question 2 and 3 on NIS Past Questions PDF**

**The surname of 40 children in a class were arranged in alphabetical order,16 of the surnames begin with O and 9 of the surnames begins with**

A. 14 letters of the alphabet do not appear as the first letter of a surname.

23: What is the probability that the surname of a child picked at random from the class begins with either O and A?

(a) 5/8

(b) 7/8

(c) 9/16

(d) 14/25

**Answer: A**24: If more than one surname begins with a letter besides A and O, how many surnames begin with the letter?

(a) 2

(b) 3

(c) 4

(d) 6

**Answer: B**

**The table below gives the score of a group of students in an English language test.**

**Scores 2 3 4**

**5 6 7**

**No. of Students 2 4 7**

**2 3 2**

25: If a student is chosen at random from the group, what is the probability that he scored at least 6 marks?

(a) 3/20

(b) 1/5

(c) ¼

(d) 3/10

**Answer: C**26: What is the probability that three customers waiting in a bank will be served in the Sequence of their arrival at the bank?

(a) 1/6

(b) 1/3

(c) ½

(d) 2/3

*Answer: C.*NOTE: If you would love to get the

**full NIS Past Questions PDF**, use the comment box below by submitting your email address and name.

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