How do I get the first element in a row returning True on a given function in Google Sheets

Question

Say I have a table with two columns: name and age, and that the table's rows are ordered by age.

I need a function to find the name of the youngest person who is at least 50 years old.

Example

For this list:

Name	Age
Nordom	3
Annah	19
Ignus	56
Morte	72

We'd get "Ignus".

Answer 1

As you said age column is sorted so can try below formula.

=INDEX(FILTER(A2:A5,B2:B5>=50),1)