NSEJS - probability

Probability, Singapore Maths Olympiad

A fair dice is thrown 3 times. the results of the first, second and the third throw are recorded as x, y and z respectively. Suppose x + y = z. What is the probability that one of x,y,z is atleast 2?

Singapore Maths Olympiad

JMO - number of ways

If you can travel from Mumbai to Baroda by 6 trains, from Baroda to Jaipur by 4 trains and from Jaipur to Delhi by 3 Trains. Then in how many ways can you travel from Mumbai to Delhi?

probability

In a multiple choice question, there are four alternatives, of which one or more are correct. A candidate will get marks in the question only if he ticks all the correct answers. If the candidate ticks the answers at random but is allowed upto three chances to answer the question, then the probability that he will get marks in the question is .......................

Probability

if A,B and C are events such that P(A) = 0.3, P(B) = 0.4,  P(C) = 0.8, P(AB) = 0.09, P(AC) = 0.28, P(ABC) = 0.08.
If P(A U B U C) >= 0.75. What will be P(BC)?

IIT 83

probability

Six boys and six girls sit in a row randomly. Find the probability that

1. the six girls sit together
2. the boys and girls sit alternately

Probability

2 dices are thrown simultaneously. What is the probability of obtaining a total score of 7?

IIT 74

Probability

 
If 3 points of a triangle lie on the circumference of a Circle, then what is the Probability of the triangle being an acute angle triangle.
Gator Competitive Exam 2013