Question # 1

No. of selection of n different things out of n is:

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1

n

n!

none

A dice is thrown. The probability to get an even number is:

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1

none of these

No. of triangles can be formed by joining the vertices of the polygon having 12 sides ?

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202

220

110

none of these

The factorial of positive integer is:

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rational no.

positive integer

real no.

none

Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn bears a number which is a multiple of 3 ?

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none of these

In a simultaneous throw of two dice, The probability of getting sum 3 or 11 is:

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none

Probability of an impossible event is:

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0

1

-1

∞

No. of arrangements of the letters of the word PAKPATTAN can be made, taken all together ?

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15130

15120

1512

none of these

A die is rolled. The probability that the dots on the top are greater than 4 is:

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5, 6

1

Number of digits multiple of 5 made from the digits 2, 3, 5, 7, 9 is:

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5

24

20

none

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The value of ⁵C₂ is:

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1

10

20

30

One card is drawn at random from a pack of 52 cards. The probability that the card drawn a king is:

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none of these

No. of signals made by 4 flags of different colors using 2 flags at a time:

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6

12

60

none

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4

6

8

10

n! stands for:

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product of first natural numbers

sum of n natural numbers

product of n integers

none of these

For a positive integer n:

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

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

n! = n(n+1)!

none of these

No. of signals made by 5 flags of different colors using 3 flags at a time is:

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60

15

10

None

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

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0

1

>1

none

How many different number can be formed by taking 4 out of the six digits 1, 2, 3, 4, 5, 6:

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360

120

366

none of these

No. of triangles can be formed by joining the vertices of the polygon having 5 sides ?

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10

15

20

none of these

In how many ways two places can be filled by n objects:

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n(n-1)

2!

n(n+1)

None

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