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What will be the output of this code?

medium📝 Predict Output Q5 of 15
NumPy - Array Data Types
What will be the output of this code?
import numpy as np
arr = np.array([0.1, 0.2], dtype=np.float32)
print(arr[0] * arr[1])
A0.02
B0.0199999
C0.0200001
D0.2
Step-by-Step Solution
Solution:
  1. Step 1: Understand the operation

    The code multiplies two float32 numbers: 0.1 and 0.2.
  2. Step 2: Floating point precision

    Due to float32 precision limits, the product is not exactly 0.02 but close to it.
  3. Final Answer:

    0.0200001 -> Option C
  4. Quick Check:

    Multiplying float32 numbers can introduce small precision errors [OK]
Quick Trick: Float32 multiplication may slightly differ from exact decimal [OK]
Common Mistakes:
  • Assuming exact decimal multiplication
  • Confusing float16 precision with float32
  • Ignoring floating point rounding errors

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