ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade X - Probability
Question 1
1.
Three unbiased coins are tossed simultaneously. Find the probability of getting no head.
  • 0
  • 2
    9
  • 1
    4
  • 7
    8
  • 1
    8
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 clubs?
  • 1
    4
  • 1
    26
  • 3
    13
  • 1
    13
  • 1
    52
Question 3
3.
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
    13
  • 1
    26
  • 3
    13
  • 1
    52
  • 1
    4
Question 4
4.
A lot of 31 bulbs contain 15 defective ones. One bulb is drawn at random from the lot. What is the probability that this bulb is defective ?
  • 15
    31
  • 1
    2
  • 16
    31
  • 14
    31
Question 5
5.
Two unbiased coins are tossed simultaneously. Find the probability of getting exactly one head.
  • 2
    3
  • 3
    4
  • 5
    6
  • 1
    2
  • 4
    5
Question 6
6.
    • 261 families with 2 children were selected randomly, and the following data were recorded
    • No. of girls in a family
      0
      1
      2
      Number of families
      72
      90
      99
    • Compute the probability of the family, chosen at random, having 1 girl.
  • 9
    29
  • 11
    30
  • 19
    29
  • 11
    29
  • 10
    29
Question 7
7.
Two unbiased coins are tossed simultaneously. Find the probability of getting at most one head.
  • 1
    2
  • 1
  • 4
    5
  • 1
    4
  • 3
    4
Question 8
8.
A lot of 33 bulbs contain 6 defective ones. One bulb is drawn at random from the lot. Suppose the bulb drawn is not defective and is not replaced. Now one bulb is drawn at random from the rest. What is the probability that this bulb is not defective ?
  • 13
    16
  • 3
    4
  • 3
    16
  • 14
    17
  • 7
    8
Question 9
9.
An unbiased die is thrown once. Find the probability of getting an even number?
  • 1
    2
  • 4
    5
  • 3
    4
  • 2
    3
  • 5
    6
Question 10
10.
Three unbiased coins are tossed simultaneously. Find the probability of getting at least two heads.
  • 5
    6
  • 2
    3
  • 4
    5
  • 3
    4
  • 1
    2