Out of 100 students two sections of 40 and 60 students are formed. If you and your friends are among the 100 students, what is the probability that i. You both enter the same section? ii. You both enter the different section?

Out of 100 students,two sections of 40 and 60 are formed.If you and your friend are among the 100 students,what is the probability that (a) you both enter the same section? (b) you both enter the different sections?

Out of 100 students two sections of 40 and 60 are formed If you and your friend are among 100 students what is the probability (i) you both enter the same section (ii)you both enter the different sections

In how many ways two sections of 30 students each can be formed from 60students?

100 students appeared for two tests, 60 passed the first, 50 passed the second and 30 passed both. Probability that a student selected at random has failed in both tests is

Savita and Hamida are friends.What is the probability that both will have (i) the same birthday? ( ii) different birthdays? (ignoring a leap year).

Let there are 4 sections of 25 students each in a coaching class. Now, out of 150 students 100 are to be selected randomly and entrolled in these sections. Then, the probability that the students A and B (both present in 150 students) are selected and placed in the same section, is

A class is divided into two sections A and B . Passing average of 20 students of section A is 80% and passing average of 30 students of section B is 70% . What is the passing average of both the sections ?

Out of two sections A and B, 10 students of section B shift to A, as a result strength of A becomes 3 times the strength of B. But, if 10 students shift over from A to B, both A and B become equal in strength. Ratio of the number of students in section A that of section B is