Not understanding the question

in this question why 5 is not consider in the bottom view and how to approach this question please give me some hint

Shivam, I recommend you to pls go through the online video on bottom view as : https://youtu.be/ZyWh2v-74QI

In this question, basically you have to print all those nodes that you can see while you are looking tree through the bottom. I hope this video would help you to understand the concept.