Please explain the question

#1

plz explain the question and approach

#2

Hello @goyalvivek
Pls check this video explanation by prateek bhaiya

#3

i am unable to locate the video; hint is for triplet question

#4

Here is the Link

#5

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.