[Solved] What is the output of this code?import numpy as np arr = np.array([5, 10, 15, 20]) print(arr[1:3]) — Ans: [10 15] | NumPy

NumPy - Indexing and Slicing

What is the output of this code?

import numpy as np
arr = np.array([5, 10, 15, 20])
print(arr[1:3])

A[20]

B[5 10]

C[10 15]

D[15 20]

Step-by-Step Solution

Solution:

Step 1: Understand slicing syntax arr[1:3]
This slice selects elements from index 1 up to but not including index 3.
Step 2: Identify elements at index 1 and 2
Elements are 10 (index 1) and 15 (index 2), so output is [10 15].
Final Answer:
[10 15] -> Option C
Quick Check:
Slicing arr[1:3] = [10 15] [OK]

Quick Trick: Slice excludes end index, so arr[1:3] gets indices 1 and 2 [OK]

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