Number Series | Science Olympiad for Class 3 PDF Download

Meaning

Number series are like a sequence of numbers that follow a pattern, just like counting numbers but with a twist!

Types of Number Series

Addition Series

• The next number in the sequence is obtained by adding a constant to the previous number.

Subtraction Series

• The next number in the sequence is obtained by subtracting a constant from the previous number.

Multiplication Series

• The next number in the sequence is obtained by multiplying a constant by the previous number.

Division Series

• The next number in the sequence is obtained by dividing the previous number by a constant.

Square Number Series:

• Each number in the series is the square of consecutive integers.
• Example: 1, 4, 9, 16, 25, 36...

Fibonacci Number Series:

• Begins with 0 and 1, where each subsequent number is the sum of the previous two numbers.
• Example: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34...

How to Find the Next Number

Look for a Pattern:

• We need to see if there's a special way the numbers are changing each time.

Follow the Pattern:

• Once we figure out the pattern, we use it to find the next number in the series.

Strategies for Solving Number Series

Start Simple:

• We begin by seeing if the numbers are going up by the same amount each time.

Use Your Counting Skills:

• We can count in our heads or use our fingers to help us find the next number.

Solved Example

(i) If the series is 3, 6, 9, 12, ..., what's the next number?
Ans: We can see that each number is going up by 3, so the next number would be 12 + 3 = 15.