CLASS-10
BOARD: CBSE
Mathematic Worksheet - 14
TOPIC: Probability
For other CBSE Worksheet for class 10 Mathematic check out main page of Entrancei.
FORMULA
|
P(E) =(Number of trials in which the event happened)/(Total number of trails) |
1. A bag contains 5 red, 4 blue and 3 green balls. One ball is drawn at random. Find the probability that the ball drawn is:
a) blue
b) not red
c) either red or green
d) black
e) red and green.
2. A dice is thrown once. Find the probability of getting:
a) a number divisible by 3
b) a factor of 6
c) either 3 or 4
d) neither 2 nor 4
e) a number from 1 to 6
f) a number 7.
3. Find the probability of having 53 Sundays in a leap year.
4. a) A batsman hits a boundary in 7 balls out of 28 balls. Find the probability that he doesn’t hit a boundary.
b) The probability of winning a game is 0.65. What is the probability of losing it ?
5. A child has a dice whose six faces show the letters as given below:
|
A |
C |
B |
A |
5. The dice is thrown once. What is the probability of getting:
a) A
b) not B
c) C
d) Either A or B
e) not f) neither A nor B.
6. From a well shuffled deck of 52 playing cards, a card is drawn at random. Find the probability of getting
a. Anon-face card
b) either a face card or a red card
c) a red face card
d) a king of black suit
e) a diamond
f) either a spade or club.
7. Two coins are tossed simultaneously. Find the probability of getting a) 2 heads b) 2 tails
c) At least one head d) at most one tail.
8. A box contains cards numbered from 1 to 20. A card is drawn at random. Find the probability that the card drawn bears:
a) a prime number
b) an even number
c) a number divisible by 4
d) a factor of 20.
9. In an interview one candidate is to be selected out of 5 male and 6 female candidates. Find the probability that the selected candidate is a:
a) male
b) female
c) male or female
d) male and female.
10. A box contains 3 red, 4 green and 6 purple marbles. One marble is taken out at random. Find the probability that the marble taken out is :
a) green
b) not purple
c) either green or purple
11. A card is drawn at random from a well shuffled deck of 52 cards. Find the probability of getting
a) a black king
b) Neither heart nor a king
c) a black card and a king
d) a spade or a ace.
12. A box contains 24 balls out of which some are green and others are red. If a ball is drawn from the probability of getting a green ball is 2/3. Find the number of red balls in the box.
