What will be the output of the following code?

medium📝 Predict Output Q13 of 15

NumPy - Array Operations

import numpy as np
arr = np.array([1, 2, 3])
arr *= 2
print(arr)

A[1 2 3]

B[2 4 6]

C[3 4 5]

DError

Step-by-Step Solution

Solution:

Step 1: Understand the operation arr *= 2
This multiplies each element of arr by 2 in-place, changing arr to [2, 4, 6].
Step 2: Check the print output
Printing arr shows the updated array [2 4 6].
Final Answer:
[2 4 6] -> Option B
Quick Check:
arr *= 2 doubles elements in-place [OK]

Quick Trick: *= doubles array elements in-place [OK]

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