Experimental Approach to Probability
250 students of class X of a school appeared in a test of 100 marks and the data about the marks secured is as below.Markssecured0−2021−4041−6061−8081−100Numberofstudents2035656070
Find the probability of selecting at random, a student who scored
(i) not more than 40
(ii) more than 60
(iii) more than 80 [ 2 MARKS ]
The probability of getting a composite number in a throw of dice is ___.
When two dice are thrown simultaneously, the probability of getting a sum of 12 is ___.
If you roll a die, what is the probability of getting a number greater than 2?
- Two Out Of Three Rolls
- Two Out Of Four Rolls
- One Out Of Three Rolls
- Three Out Of Four Rolls
The probability of getting both head and tail in one throw of a coin is ___.
Four friends named Ravi, Suresh, Rani, Geetha put their names in a box. A name is picked at random. The probability of getting a boy's name is 14.
In a box containing 18 balls of 3 different colours red, green and blue, if 10 are red and 4 are green, then what is the probability of getting a blue ball in the first attempt?
When two dice are thrown , the probability of getting a sum of 6 is ___________
48 ice-creams are placed on a table. Some are chocolate flavoured and others are vanilla flavoured. If a person takes an ice-cream at random from the table, the probability that it is chocolate flavoured is 23. Find the number of vanilla flavoured ice-creams on the table.