Hi,
Here is the data for a column below:
class 1
class 10
class 12
class 11
class 1
class 1

So I want to filter the cells containing only class 1. so when I am using custom filter it is pulling all above data because in every cell it contains 1.
So kindly suggest me how to filter or any other technique to solve this problem.

Any suggestion highly appreciated?

Thanks in advance