SSC Board Practice

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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 a diamonds?
  • 1
    26
  • 1
    13
  • 1
    4
  • 1
    52
  • 3
    13
Question 2
2.
In a lottery, there are 17 prizes and 14 blanks. What is the probability of not getting a prize?
  • 15
    31
  • 17
    31
  • 14
    31
  • 13
    31
  • 15
    32
Question 3
3.
Two unbiased dice are thrown simultaneously. Find the probability of getting 6 as the sum of the two numbers on the dice.
  • 1
    6
  • 31
    36
  • 6
    37
  • 1
    9
  • 5
    36
Question 4
4.
Rita and Keerthi are friends. What is the probability that both will have different birthdays? (ignoring a leap year).
  • 1
  • 364
    365
  • 365
    366
  • 1
    365
  • 363
    365
Question 5
5.
Two unbiased dice are thrown simultaneously. Find the probability of getting at least 3 as the sum of the two numbers on the dice.
  • 35
    36
  • 1
  • 17
    18
  • 1
    36
  • 36
    37
Question 6
6.
Which of the following experiments have equally likely outcomes?
a)
A baby is born. It is a boy or girl
b)
A true/false question is attempted. The answer is either right or wrong
c)
A man starts his vehicle. It starts or it does not starts
d)
A ball is hit. It reaches the boundary or not
e)
A man throws a die. The number on the top is either 1 or not 1
  • {a,b}
  • {e,c,a}
  • {d,b,a}
  • {c,a}
  • {d,b}
Question 7
7.
When two coins are tossed simultaneously, how many elementary events are possible?
  • 4
  • 5
  • 7
  • 1
  • 3
Question 8
8.
Two unbiased coins are tossed simultaneously. Find the probability of getting at least two heads.
  • 3
    4
  • 0
  • 1
    2
  • 2
    5
  • 1
    4
Question 9
9.
One card is drawn at random from a well shuffled deck of 52 cards. What is the probability that the card drawn is '6' of black suit ?
  • 1
    26
  • 1
    4
  • 1
    13
  • 3
    13
  • 1
    52
Question 10
10.
A box contains 30 discs which are numbered from 1 to 30. If one disc is drawn at random from the box, find the probability that it bears a two-digit number.
  • 8
    11
  • 3
    10
  • 7
    10
  • 4
    5
  • 3
    5