What is random number table?

Dakarai is comparing two books: $A$ and $B$. He predicts that book $A$ has longer words than book $B$. Dakaria decides to choose a page from each book as a sample. He will count the length of every word on the page. Do you think the sample is large enough to be sure that he has the correct answer to his prediction?

Sofia is investigating birthdays of young people. She predicts that birthdays in autumn are more common than birthdays in other seasons.

Sofia displays her results in a table as shown.

What is the size of sample?

In a recent survey, conducted among $2000$ randomly selected graduates in a district, $367$ of them are IAS aspirants.Calculate the proportion of IAS aspirants among the graduates in the district.

Suppose you have a $4\mathrm{L}$ container and a $9\mathrm{L}$ container. If you had access to a source of running water, explain how you could measure out exactly $6\mathrm{L}$ of water. 

 Determine the type of sampling technique used in each case. Choose from convenience, simple random, systematic, stratified or quota sample.

A local newspaper selects to interview people at the seaside. It specifies that $90\%$ of those interviewed must be local residents and $10\%$ must be tourists.

Dakarai is comparing two books: $A$ and $B$. He predicts that book $A$ has longer words than book $B$. Dakaria decides to choose a page from each book as a sample. He will count the length of every word on the page. How could he choose the page each time?

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$