On her vacations Veena visits cities A,B C and D in random order . What is the probability that she visits A before B ?

Two customers Shyam and Ekta are visiting a particular shop in the samw week (Tuesday to Saturday). Each is equally likely to visit the shop on any day as on another day. What is the probability that both will visit the shop on (i) the same day? (ii) consecutive days? (iii) different days?

Two customers Shyam and Ekta are visiting a particular shop in the same week (Tuesday to Saturday). Each is equally likely to visit the shop on any day as on another day. What is the probability that both will visit the shop on i] the same day? i] consecutive days? iii] different days?

In a relay race there are five terms A, B, C, D and E. (a) What is the probability that A, B and C finish first, second and third, respectively. (ii) What is the probability that A, B and C are first three to finish (In any order) (Assume that all finishing orders are equally likely).

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 if it is defective . The shopkeeper drawn one pen at random and gives it to her. What is the probability that She will not buy it ?

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?

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 if it is defective. The shopkeeper draws one pen at random and gives it to her. What is the probability that: (i) she will buy it? (ii) she will not buy it?

A lot consists of 144 ball pens of which 23 are defective and the others are good. Nuri will buy a pen if it is good, but will not buy if it is defective. The shopkeeper draws one pen at random and gives it to her. What is the probability that i] She will buy it? ii] She will not buy it ?

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 if it is defective . The shopkeeper drawn one pen at random and gives it to her. What is the probability that She will buy it?