Question # 1

Five engineering, four mathematics, two chemistry books are placed on a table at random.The probability that the books of each kind are all together is

Choose an answer

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

Choose an answer

1/8

2/8

3/8

None of these

The sum if 1,3,5,7,9........ up to 20 terms is

Choose an answer

400

472

563

264

The domain of a finite sequence is a

Choose an answer

Set of natural numbers

R

Subset of N

Proper subset of N

Choose an answer

0.9

0.74

0.2016

None of these

n different objects can be arranged taken all at a time in ______

Choose an answer

(n + 1)! ways

(n - 1)! ways

n! ways

n ways

How many 3 digit numbers can be formed by using each one of the digit 2, 3, 5, 7, 9 only once?

Choose an answer

15

24

60

120

How many different 5-digit even numbers are possible form digit 1,2,4,6,8

Choose an answer

4 : 4!

4!

5!

4!+4!

If 4 ⁶P_r= ⁶P_r+1, then r is equal to

Choose an answer

4

3

2

1

9. 8. 7. 6= ______

Choose an answer

The number of 5-digit number that can be formed from the digits 1,2,4,6,8, when 2 and 8 are never together is

Choose an answer

72

48

144

20

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

Choose an answer

3/8

1/8

1/4

None of these

Two coins are tossed twice each. The probability that the head appears on the first toss and the same forces appear in the two tosses is

Choose an answer

1/4

1/2

1/3

1/7

If for two events A and B , P(A∪B)=1,then events A and B are

Choose an answer

Certain events

Mutually exclusive

Complementary events

Independent

Two cards are drawn at random without replacement. the probability that the first is a king and second is not a king is

Choose an answer

48 / 663

24 / 663

12 / 663

None of these

Three integers are chosen at random from the first 20 integers. Then probability that their product is even, is

Choose an answer

2 / 19

3 / 29

17 / 19

4 / 19

Three numbers are chosen random without replacement from {1, 2, 3, ...., 10}. the probability that minimum of the chosen numbering is 3 or their maximum is 7

Choose an answer

7 / 40

5 / 40

11 / 40

None of these

The probability that the sum of dots appearing in two successive thrown of two dice, in every time 7 is

Choose an answer

1/5

1/36

1/7

1/63

Cycle tyres are supplied in lots of 10 and there is a chance if 1 in 500 tyres to be defective. Using Poisson distribution, the approximate number of lots containing no defective tyre in a consignment of 10, 0000 lots is

Choose an answer

9028

9208

9802

9820

Choose an answer

P(A) + P(B)

P(A) - P(B)

P(A) . P(B)

P(A) / P(B)

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

Choose an answer

120

60

24

15

Choose an answer

110

220

1320

None of these

A bag contains 5 white, 7 red and 5 black balls. If four balls are drawn one by one with replacement, the probability that none is white is

Choose an answer

(11/16)²

(5/16)²

(11/16)⁴

(5/16)⁴

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

Choose an answer

44/4165

22/4165

11/4165

None of these

Choose an answer

56

7

8

8/7

When a selection of object is made without paying regard to the order of selection, it is called

Choose an answer

Sequence

Series

Combination

Permutation

Number of permutations of n distinct objects taken r(<n - 3) at a time which exclude 3(<n) particular objects is

Choose an answer

3! P(n, r - 3)

P(n, 3) P(n, r - 3)

P(r, r)P(n, r - 3)

P(n - 3, r)

Number of selections of n different things out of n

Choose an answer

1

nPr

n!

nPr

n!/(n-1)!=

Choose an answer

n

n!

(n-1)!

0!

More Classes

Other Links

ECAT Mathematics Chapter 9 Permutation, Combination and Probability Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer