Question

Which of the following would extract all the first 3 rows of the last 5 columns in a given numpy 2D array ‘a’?

Answer 1

Answer:

a[:3, -5:]

Explanation:

:3 parts represents rows i.e 0, 1, 2

-5: part represents column form -5 , -4, ... ,-1. This is using negative indexing. -1 is last column and column above -2 and so on.