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ECAT Mathematics Permutations Combinations and Probability Online Test

Maan AliLast Updated: April 18, 2025

Mathematics Permutations Combinations and Probability MCQS Online Test

ECAT Math Permutations Combinations and Probability Online Test

Total Questions:	74
Time Allowed:	40 Minutes
Total Marks:	74
How to Attempt Test:	Please choose the right Option in MCQ-type question.
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ECAT Math Permutations Combinations and Probability Chapter Online Test

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Page 1 of 3

Math

1. If probability of bulb being defective is 0.2. estimate how many defective bulb there would be in 600 bulbs

120

2. The probability of getting 5, when one dice is called

1/6

1/3

1/5

3. The number of words that can be formed out of the letters of the word MATHEMATICS is

11!/2!2!2!.

11!/2!.2!.2!.

11!/2³!

2!2!2!/11!.

4. An arrangement of a finite number of objects taken some or all at a time is called their

Combination

A.P

Sequence

Permutation

5. There are 25 tickets bearing numbers from 1 to 25. One ticket is drawn at random. The probability that the number on it is a multiple of 5 or 6 is

11/25

9/25

None of these

7/25

6. ⁴C₄ has the value equal to

None of these

7. There dice are thrown simultaneously find the probability to get greatest sum of dost?

1/216

None of these

1/18

18/216

8. The sample space for tossing a coin once is

{H}

{H, H}

{H, T}

{T}

9. A function whose domain is the set of natural numbers is called the

Identity function

Onto function

Sequence

Series

10. Factorial of -2 =

362880

40320

None of these

-362880

11. All letters of the word “AGAIN” are permuted in all possible ways and the words so formed (with or without meaning) are written as in dictionary, then the 50th word is:

IAANG

NAAIG

INAGA

NAAGI

12. ⁶P₃ =

120

360

13. The number of words that can be formed out of the letters of the word MURREE is

6!/2²!

6!/2!.2!

2²!/6!

6!.2.2!

14. The number of words that can be formed out of the letters of the word PHYSICS is

2!/7!

7!/2!

7/2

15. If ⁿC₁₂ = ⁿC₆ the value of n is

16. In a class of 100 students, 60 drink tea, 50 drink coffee and 30 drink both. A student from this class is selected at random. The probability that the student takes at last one of 2 drinks is

None of these

2/5

3/5

4/5

17. (n + 2)(n + 1) n =

(n + 2)!

(n+2)!/(n–1)

(n – 1)!/(n+2)

18. ⁿPᵣ = ?

n/(n-r)

n!/(n+r)!

n!/(n-r)!

n!/(n+1)!

19. ⁴C₄ = ?

124

250

None of these

20. Two unbiased dice are thrown. The probability that the total score is > 5 is

11/18

13/18

1/18

7/18

21. 6!/8! =

1/65

1/56

22. In different objects can be arranged taken all at a time in

(2n)! ways

(n – 1)! Ways

n! Ways

(n + 1)! Ways

23. The letters of the JUNE taken all a t a time can be written in

720 ways

2 ways

6 ways

24 ways

24. ⁶P₄ is equal to

360

25. Riaz, Saba, Maria, Shehzad are to give speeches in a class. The teacher can arrange the order of their presentation in

24 ways

12 ways

256 ways

4 ways

Page 2 of 3

26. In how many ways can 7 keys be arranged in a circular key ring

1440

360

720

5040

27. If n is any positive integer, then

(n + 1)! = (n + 1)(n – 1)!

(n+1)! = (n + 1) n!

n! – n(n + 1)!

n! – n (n – 2)!

28. A number is selected at random form the three digit numbers, the probability that the number is divisible by 4 is

1/8

1/16

29. Six boys and 3 girls are to be seated at random, in a row, for a photograph. The probability that no two girls will sit together is

1/12

5/12

7/12

1/6

30. Four cards are drown at random from a pack of 52 playing cards. The probability of getting all the four cards of the same suit is

22/4165

44/4165

None of these

11/4165

31. The value of ⁵C₂ is

32. From a group of 5 men and 3 women, a committee of 4 persons is to be selected randomly. The probability that there is a majority of men is

1/6

1/3

33. In how many ways can the letters of the word ‘LEADER’ be arranged?

360

144

720

34. Three unbiased coins are tossed. Then the probabilities of getting two heads is

1/8

3/8

None of these

35. n(n–1)/3.2.1 =

n!/3!(n–2)!

(n – 2)!/3!n!

3!(n–2)!/n!

36. From a group of 7 men and 6 women, five persons are to be selected to form a committee so that at least 3 men are there on the committee. In how ways can it be done?

564

756

645

735

37. 5 persons can be seated at a round table in

20 ways

None of these

25 ways

24 ways

38. What is the probability to get a block jack from a well shuffled pack of playing cards?

3/13

1/13

1/26

2/13

39. Two cards are drawn at random from a well shuffled pack of cards. The probability that at least one of them is a face card is

7/17

3/17

9/17

5/17

40. 8.7.6/3.2.1 =

3!5!/8!

10!

10/2!8!

8!/3!5!

41. 1/20.19.18.17 =

20!

1/16!

16!/20!

20!/16!

42. Two dice are thrown simultaneously find the probability that the sum of the dots of the dice is a prime no?

5/12

4/9

7/36

5/9

43. Events A, B and C are equally likely when

P(B) = P(A) + (PC)

P(A) + P(B) = P(C)

P(A) = P(B) = P(C)

P(A) = P(B) + P(C)

44. A coin is tossed. If head comes up, a die is thrown but if tail comes up, the coin is tossed again. The probability of obtaining a head and an even number is

2/8

1/8

3/8

None of these

45. ⁿPᵣ =

n!/(n+r)!

(n–r)!/n!

n!/(n–r)!

n!/(n–r)!r!

46. The number of words that can be formed out of the letters of the word BANNU is

All of these

5!.2!

2!/5!

5!/2!

47. If A and Bare mutually exclusive then P(AUB) = ?

P(A) + P(B) – P(AUB)

P(A) + P(B)+P(AUB)

P(A) + P(B)

P(A) + P(B) – P(A∩B)

48. 6.5.4 =

6!/3!

3!/6!

1/6!

49. 4! + 5! = ?

50. How many signals can be given with three different flags when any number of them may be used

Page 3 of 3

51. (n+1)n(n–1)/3.2.1 =

(n + 1)!

(n–2)!

3!(n–2)/(n+1)

(n+1)/3!(n–2)

52. Probability theory was introduced by ___________

German mathematician

American mathematician

French mathematician

British mathematician

53. If n (E₁) = 18 and n (E₂) = 6 and n (5) = 36 also E₁ and E₂ are independent then P(E₁ ∩ E₂) = ?

22/36

None of these

1/12

54. The letters of the CHORD taken all at a time can be written in

6 ways

720 ways

2 ways

24 ways

55. A card is drawn from a pack of cards numbered 1 to 52, the probability that the number on the card is a perfect square is

2/13

1/13

7/52

None of these

56. Three dice are thrown together. The probability of getting a total of at least 6 is

10/216

None of these

103/108

93/108

57. 6P1 is equal to

58. Two balanced dice are tossed once, the sample space when the integers on the faces of two dice are the same is

{(1, 1),(2, 2),(3, 3),(4, 4),(5, 5),(6, 6)}

{(1, 1),(2, 2),(3, 3)}

{(4, 4),(5, 5),(6, 6)}

None of these

59. The number of significant numbers which can be formed by using any number of the digits 0, 1, 2, 3, 4 but using each not more than once in each number is

356

410

260

60.

61. If A is an impossible event then P(A) = ?

-1

∞

62. The value of n, when ⁿP₂ = 20 is

63. The probability that a 3 – digit no. chosen at random divisible by 5 is

1/10

1/7

1/3

1/5

64. 5 unbiased coins are tossed simultaneously. The probability of getting at least one head is

1/32

1/16

None of these

31/32

65. The letters of the LAHORE taken all at a time can be written in

6 ways

2 ways

720 ways

24 ways

66. If probability of rain today is 1/3 what is probability of not rain today?

1/3

None of these

67. A bad contains 3 white, 4 black and 2 red balls. If 2 balls are drawn at random, then the probability that both the balls are white is

1/36

1/18

1/12

None of these

68. A die is rolled, what is the probability of getting a number which is even and greater than 2?

None of these

1/3

1/6

69. The number of permutations of the n objects of which there are p like objects of one kind, q like objects of the second kind nd r like objects of the third kind are

p!/q!ϒ!

n!/q!q!ϒ!

p!q!r!/n!

n!/q!ϒ!

70. An unbiased die is thrown. Then the probability of getting a prime is

2/3

None of these

71.

72. 19!/19!(19–19)! = ?

None of these

Undefined

73. If 4 ⁶Pᵣ = ⁶Pᵣ₊₁, then r is equal to

M-CAT-Q

74. 0!

-1

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Maan AliLast Updated: April 18, 2025

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7 Comments

Anaya says:

February 11, 2022 at 2:28 pm

How i prepare msc math entry test

zohaib says:

July 29, 2017 at 12:37 am

i got 100%

Qasim Ali says:

July 15, 2017 at 11:29 pm

whats the right answer for this mcq’s arrangment of fintite number of objects taken some or all the time??? i have confusion with this

Karan Kumar says:

May 4, 2017 at 1:52 pm

I got 96%. Only 1 mistake.

umair ahmed says:

March 19, 2017 at 1:05 pm

92%

Aunali says:

July 31, 2016 at 11:37 am

i got 96%

AMEER HAMZA says:

July 21, 2016 at 9:01 pm

GREAT PEOPLE DOING THIER JOB IN THEV BEST POSSIBLE WAY

ECAT Mathematics Permutations Combinations and Probability Online Test

Mathematics Permutations Combinations and Probability MCQS Online Test

ECAT Math Permutations Combinations and Probability Online Test

ECAT Math Permutations Combinations and Probability Chapter Online Test

Math

M-CAT-Q

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Mathematics Permutations Combinations and Probability MCQS Online Test

ECAT Math Permutations Combinations and Probability Online Test

ECAT Math Permutations Combinations and Probability Chapter Online Test

Math

M-CAT-Q

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