TOPIC7: SEQUENCE AND NUMBER PATTERN

SEQUENCE AND NUMBER PATTERN

• In mathematics, a sequence is an ordered list of objects. Like a set, it contains members (also called elements or terms).The number of ordered elements (possibly infinite) is called the length of the sequence. Unlike a set, order matters, and a particular term can appear multiple times at different positions in the sequence. 

 

 

 

 

Example 1: 

1, 4, 7, 10, 13, 16......start at 1 and jumps 3

Example 2:

3, 8, 13, 18, 23, 28, 33, 38, ...

This sequence has a difference of 5 between each number.

The pattern is continued by adding 5 to the last number each time, like this:

 

 

 

 

Example3:

 

 25,23,21,19,17,15

 

This common difference is −2
The pattern is continued by subtracting 2 each time, like this:

 

 

 



This are the 3 question to try.

Question 1

3, 10, 17, 24, 31, 38, ...

What is the next number in the above sequence?

A.      43

B.      44

C.      45

D.      46

Question 2

71, 62, 53, 44, ...

 

What is the next number in the above sequence?

A.      35

B.      36

C.      37

D.      38

Question 3 

 

Here is a number pattern. What is the missing value?
3, 6, 12, ?

 

A.     10

B.      9

C.      12

D.     24