[Solved] What will be the output of this code?import numpy as np arr = np.array([1, 2, 3]) print(arr * 2) — Ans: [2 4 6] | NumPy

NumPy - Fundamentals

What will be the output of this code?

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

A[2 4 6]

B[1 2 3 1 2 3]

C[3 4 5]

DError: unsupported operand

Step-by-Step Solution

Solution:

Step 1: Understand array multiplication
Multiplying a NumPy array by a number multiplies each element by that number.
Step 2: Calculate element-wise multiplication
Each element in [1, 2, 3] multiplied by 2 gives [2, 4, 6].
Final Answer:
[2 4 6] -> Option A
Quick Check:
Array * scalar = element-wise multiply [OK]

Quick Trick: Array * number multiplies each element [OK]

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