CBSE Board Practice

Class VI Class VII Class VIII Class IX Class X
CBSE Grade X - Probability
Question 1
1.
Simran and Roja are friends. What is the probability that both will have same birthdays? (ignoring a leap year).
  • 0
  • 1
    183
  • 1
    365
  • 2
    365
  • 364
    365
Question 2
2.
A carton consist of 82 shirts of which 72 are good, 7 have minor defects and 3 have major defects. Vikram, a trader, will only accept the shirts which are good, but Keerthi, 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 Vikram?
  • 5
    41
  • 35
    41
  • 37
    42
  • 36
    41
  • 37
    41
Question 3
3.
A box contains 48 gray balls, 52 black balls, 8 pink balls and 48 yellow balls. One ball is drawn at random from the box. Find the probability that the ball drawn is not black.
  • 2
    3
  • 1
    3
  • 3
    4
  • 1
Question 4
4.
A die is thrown 500 times. The number 2 appears on the upper face 88 times. Now the die is thrown at random. What is the probability of getting a 2 ?
  • 23
    125
  • 21
    125
  • 23
    126
  • 22
    125
  • 103
    125
Question 5
5.
In a lottery, there are 21 prizes and 18 blanks. What is the probability of getting a prize?
  • 8
    13
  • 7
    13
  • 6
    13
  • 4
    7
Question 6
6.
    • The distances (in km) of engineers from their residence to their place of work were found as follows
      • 1
      • 22
      • 18
      • 7
      • 14
      • 3
      • 24
      • 16
    • What is the empirical probability that an engineer lives less than 24 km from her place of work?
  • 8
    9
  • 1
    8
  • 1
  • 3
    4
  • 7
    8
Question 7
7.
A die is thrown twice. What is the probability that 6 will come atleast once?
  • 25
    36
  • 5
    18
  • 11
    36
  • 12
    37
  • 1
    3
Question 8
8.
A lot of 24 bulbs contain 6 defective ones. One bulb is drawn at random from the lot. What is the probability that this bulb is defective ?
  • 1
    4
  • 3
    4
  • 1
    2
  • 2
    5
  • 0
Question 9
9.
What is the probability of a sure event?
  • 1
  • 0
  • 3
    4
  • 1
    2
  • 1
    4
Question 10
10.
An unbiased die is thrown once. Find the probability of getting a 4?
  • 2
    7
  • 1
    6
  • 5
    6
  • 1
    3
  • 0