Tamil Nadu Board Solutions for Chapter: Information Processing, Exercise 3: Exercise 7.1

Shanthi has $5$ churidar sets and $4$ frocks. In how many possible ways, can she wear either a churidar or a frock?

In a Higher Secondary School, the following types of groups are available in $\mathrm{XI}$ standard

$\mathrm{I}.$ Science Group:

$\left(\mathrm{i}\right)$ Physics, Chemistry, Biology and Mathematics

$\left(\mathrm{ii}\right)$ Physics, Chemistry, Mathematics and Computer Science

$\left(\mathrm{iii}\right)$ Physics, Chemistry, Biology and Home Science

$\mathrm{II}.$ Arts Group:

$\left(\mathrm{i}\right)$ Accountancy, Commerce, Economics and Business Maths

$\left(\mathrm{ii}\right)$ Accountancy, Commerce, Economics and Computer Science

$\left(\mathrm{iii}\right)$ History, Geography, Economics and Commerce

$\mathrm{III}.$ Vocational Group:

$\left(\mathrm{i}\right)$ Nursing - Biology, Theory, Practical I and Practical $\mathrm{II}$

$\left(\mathrm{ii}\right)$ Textiles and Dress Designing - Home Science, Theory, Practical $\mathrm{I}$ and Practical $\mathrm{II}$.

In how many possible ways, can a student choose the group?

If you have $2$ school bags and $3$ water bottles then, in how many different ways can you carry both a school bag and a water bottle, while going to school?

Roll numbers are created with a letter followed by $3$ digits in it, from the letters $\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}$ and $\mathrm{E}$ and any $3$ digits from $0$ to $9$. In how many possible ways can the roll numbers be generated?

A safety locker in a jewel shop requires a $4$ digit unique code. The code has the digits from $0$ to $9$. How many unique codes are possible?

An examination paper has $3$ sections, each with five questions and students are instructed to answer one question from each section. In how many different ways of can the questions be answered?

The given spinner is spun twice and the two numbers got are used to form a $2$ digit number. How many different $2$ digits numbers without repetition of digits are possible?

In a class there are $26$ boys and $15$ girls. The teacher wants to select a boy or a girl to represent a quiz competition. In how many ways can the teacher make this selection?