SSC Board Practice

SSC Grade IX - Probability
Question 1
1.
One card is drawn at random from a well shuffled deck of 52 cards. What is the probability that the card drawn is either a black card or a king?
  • 1

    26
  • 1

    52
  • 3

    13
  • 7

    13
  • 1

    13
Question 2
2.
One card is drawn at random from a well shuffled deck of 52 cards. What is the probability that the card drawn is a face card ?
  • 1

    26
  • 3

    13
  • 1

    52
  • 1

    4
  • 1

    13
Question 3
3.
A die is thrown twice. What is the probability that 3 will come atleast once?
  • 12

    37
  • 25

    36
  • 11

    36
  • 1

    3
  • 5

    18
Question 4
4.
An unbiased die is thrown once. Find the probability of getting a prime number?
  • 1

    2
  • 3

    4
  • 2

    3
  • 5

    6
  • 4

    5
Question 5
5.
One card is drawn at random from a well shuffled deck of 52 cards. What is the probability that the card drawn is a jack?
  • 1

    26
  • 1

    13
  • 1

    4
  • 1

    52
  • 3

    13
Question 6
6.
A carton consist of 79 shirts of which 69 are good, 8 have minor defects and 2 have major defects. Satya, a trader, will only accept the shirts which are good, but Harini, another trader, will only reject the shirts which have major defects. One shirt is drawn at random from the carton. What is the probability that it is acceptable to Harini?
  • 39

    40
  • 2

    79
  • 76

    79
  • 78

    79
  • 77

    79
Question 7
7.
A single unbiased coin is tossed. Find the probability of getting a head.
  • 5

    6
  • 2

    3
  • 1

    2
  • 3

    4
  • 4

    5
Question 8
8.
Two unbiased coins are tossed simultaneously. Find the probability of getting at least one head.
  • 3

    4
  • 1

    2
  • 4

    5
  • 1

    4
  • 1
Question 9
9.
A box contains 60 discs which are numbered from 1 to 60. If one disc is drawn at random from the box, find the probability that it bears a number divisible by 5.
  • 4

    5
  • 0
  • 2

    5
  • 1

    5
  • 1

    3
Question 10
10.
Which of the following are possible values of probability?
a)
4
b)
3

8
c)
7

4
d)
-2
e)
0.11
  • {c,e,b}
  • {d,a,b}
  • {a,b}
  • {b,e}
  • {c,e}