3rd Maths : Term 1 Unit 6 : Information Processing
Listing down all possible ways
Example 1: Trousers and Shirts
Kavin has taken 2 trousers and 3 shirts with him to wear in a picnic. list down all the possible choices that he can wear them.
Here are the choices.
There are two possible ways of dressing using one shirt and two trousers as shown in picture 1. Similarly we shall pair remaining two shirts with the trouser in four ways as shown in picture 2 and picture 3.
Hence there are six possible ways of pairing two trouser with three shirts.
Example 2: Fruits and Vegetables
Kaviya likes to eat one vegetable and one fruit in a day. Apples and oranges are her choices among fruits and carrots and cucumbers are her choices among vegetables. Complete the given table by filling the ways she combine one fruit with one vegetable.
Example 3: Three-Digit Numbers
List down all possible ways of forming three digit numbers by using the digits 4, 5 and 7 once.
Possible ways
Practice
1. List down all possible ways of forming three digit numbers by using the given digits only once.
a. 9, 6, 8
b. 3, 2, 0
c. 1, 5, 4
Possible ways
a. 986 968 698 689 896 869
b. 320 302 230 203 032 023
c. 154 145 415 451 541 514
2. Find all possible ways of combining the three letters a, e, t using each of them once.
Possible ways
Activity 1
Let us colour the blocks.
Find all possible ways of colouring the given blocks with blue and red. One is done for you.
Activity 2
Fill the white space in the given blocks with alternate colours and answer the following questions based on it.
1. Total number of blocks: 2
2. Number of rose block: 4
3. Number of 
blocks: 6
4. Number of 
blocks in 2 and 4 row: 1 & 2
5. How many 
more than 
: 2
Example 4: Words Starting with 'R'
List all possible 3 lettered words 4 lettered words and 5 lettered words that start with alphabet ‘R’.
Look at the above words and answer the questions.
1. Number of 4 lettered words are ___.
2. Number of words with 5 letters are ___.
3. There are ____ 3 lettered words.
4. There are ____ 5 lettered words.
List Down All Possible Words
List down all possible meaningful 3 lettered and 4 lettered words starting with the alphabet ‘A’.
Activity 3
List the names of the animals with 4 letters.
Deer, goat, lamb and lion