On her vacations Veena visits four Cities (A, B,C and D) in a random order. What is the probability that she visits :
A before B ?

On her vacations Veena visits four Cities (A, B,C and D) in a random order. What is the probability that she visits : A just before B ?

On her vacations Veena visits four Cities (A, B,C and D) in a random order. What is the probability that she visits : A first and B last ?

On her vacations Veena visits four Cities (A, B,C and D) in a random order. What is the probability that she visits : A either first or second ?

Three persons A,B,C speak at a function alongwith 7 others in a random order . The probabiltiy that A speaks before B and B speaks before C at the function is :

The first twelve letters of the alphabet are written down at random . What is the probability that there are four letters between the A and the B?

In a relay race, there are five teams, A, B, C, D and E. What is the probability that A,B and C are first three to finish (in any order)?

In a relay race, there are five teams, A, B, C, D and E. What is the probability that A,B, C finish first, second and third respectively?

A coin tossed once. What is the probability of getting of tail ? a. 0 b. 1 c. 1/2 d. 1/3

A bag A contains 3 white and 2 black balls and another bag B contains 2 white and 4 black balls. A bag and a ball out of it are picked at random. What is the probability that the ball is white?

A lot consists of 144 ball pens of which 20 are defective and the others are good. Nuri will buy a pen if it is good, but will not buy it if it is defective. The shopkeeper draws one pen at random and gives it to her. What is the probability that : She will buy it ?