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?

Two friend were born in the same year, what is the probability that they have : (i) same birthday (ii) different birthday.

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 enrolled 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 box contains 10 blocks, 3 of which are red. If you pick two blocks out of the box, what is the probability that they are both red? Assume that you do NOT replace the first block after you have picked it.

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

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

In a class of 60 students, 40 opted for NCC, 30 opted for NSS and 20 opted for both NCC and NSS. If one of these students is selected at random, then the probability that the student selected has opted neither for NCC nor for NSS is

Two dice are thrown at the same time. Find the probability of getting (i) Same number on both dice. (ii) different number of both dice.

There are 100 students in class VII in a school. 40 students are in Section A, 33 in Dection B, and the remaining students are in Section C. Find what percentage of students are there in each section.

The following table gives the distribution of students of two sections according to the marks obtained by them Represent the marks of the students of both the sections on the same graph by two frquency polygons. From the two polygons compare the performance of the two sections.