Question # 1

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

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103 / 108

10 / 216

93 / 108

None of these

(n + 2) (n + 1)n in factorial form is

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Probability of an impossible event is

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0

-1

1

∞

The sum of all even numbers less than 100 is

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2450

2352

2272

2468

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Out of 10, 000 families with 4 children each, the number of families all of whose children are daughters is

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375

500

625

150

The sum of all positive integral multiple of 5 less than 100 is

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950

760

1230

875

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1.5

1.2

8

None of these

A committee consists of 9 experts taken from three institutions A, B, and C, of which 2 are from, A, 3 form B and 4 from C. If three experts resign, then the probability that they belong to different institutions is

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1 / 729

1 / 24

1 / 21

2 / 7

How many arrangements of the letters of the word MATHEMATICS can be made

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

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1/2

2/3

3/4

None of these

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

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1/13

2/13

7/52

None of these

A die is thrown 100 times. If getting an odd number is considered a success, the variance of the number of successes is

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50

25

10

100

A and B throw a dice. The probability that A's throw is not greater then B's is

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5 / 12

7 / 12

1 / 6

1 / 2

If S is a sample space and event set E = S then P(E) is

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>0

1

<1

0

8 . 7 . 6. 5 in factorial form is

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A box contains 10 red 30 white and 20 black marbles When a marble is drawn at random the probability that it is either red or white is

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1/6

1/3

1/2

2/3

A card is drawn from a pack of cards numbered 2 to 53. the probability that the number on the card is prime number less than 20 is

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2 / 13

4 / 13

5 / 13

8 / 13

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

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1 / 18

7 / 18

13 / 18

11 / 18

If n is a negative integer n! is

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1

0

Unique

Not defined

20. 19. 18. 17= _______

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The probability to get an odd number in a dice thrown once is

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6

1

1/6

1/2

How many comittees of 5 numbers can be chosen from a group of 8 players person when each committee must include 2 particular persons

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8!

5!3!

5!

20

If 4 ⁶P_r= ⁶P_r+1, then r is equal to

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4

3

2

1

How many necklaces can be made from 6 beads of different colours?

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120

60

24

15

Eight chairs are numbered 1 to 8. Two women and three men wish to occupy one chair each. First, the women choose the chairs from amongst the chairs marked 1 to 4 and then the men select the chairs from amongst the remaining. The number of possible arrangement is

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⁶C₃x ⁴C₂

⁴C₂x ⁴P₃

⁴P₂x ⁶P₃

None of these

How many arrangements of the letters of the word PAKISTAN cab be made

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Arithmetic mean between 14 and 18 is

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16

17

15

32

A combination lock on a suitcase has 3 wheels each labeled with nine digits from 1 to 9. If an opening combination is a particular sequence of three digits with no repeats, the probability of a person guessing the right combination is

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1 / 500

1 / 504

1 / 252

1 / 250

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