SSC Board Practice

Class VI Class VII Class VIII Class IX Class X
SSC Grade IX - Probability
Question 1
1.
A missing helicopter is reported to have crashed somewhere in the rectangular region shown in fig. What is the probability that it crashed inside the shaded region as shown in the figure?
  • 15
    16
  • 1
    16
  • 2
    17
  • 0
  • 1
    8
Question 2
2.
When two coins are tossed simultaneously, how many elementary events are possible?
  • 7
  • 4
  • 5
  • 2
  • 3
Question 3
3.
Two unbiased coins are tossed simultaneously. Find the probability of getting at least one head.
  • 1
  • 1
    4
  • 4
    5
  • 1
    2
  • 3
    4
Question 4
4.
Soundarya and Revathi are friends. What is the probability that both will have different birthdays? (ignoring a leap year).
  • 364
    365
  • 365
    366
  • 1
  • 1
    365
  • 363
    365
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 '7' of spades?
  • 1
    4
  • 1
    13
  • 1
    26
  • 1
    52
  • 3
    13
Question 6
6.
A coin is tossed 70 times and head appears 30 times. If the coin is tossed again, what is the probability of getting a tail?
  • 5
    7
  • 5
    8
  • 4
    7
  • 3
    7
Question 7
7.
When a card is selected randomly out of a pack of cards, how many elementary events are possible?
  • 53
  • 51
  • 55
  • 52
  • 50
Question 8
8.
Two unbiased dice are thrown simultaneously. Find the probability of getting 11 as the sum of the two numbers on the dice.
  • 0
  • 1
    18
  • 1
    9
  • 17
    18
  • 2
    19
Question 9
9.
Two unbiased coins are tossed simultaneously. Find the probability of getting no head.
  • 1
    4
  • 1
    2
  • 0
  • 3
    4
  • 2
    5
Question 10
10.
A game consists of tossing a coin 3 times and noting its outcome each time. Gowtham wins if all the tosses give the same result i.e., three heads or three tails, and loses otherwise. Calculate the probability that Gowtham will lose the game.
  • 4
    5
  • 1
    4
  • 3
    4
  • 1
    2
  • 1