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import numpy as np

# Q2. Create a 5x5 NumPy array with random integers between 1 and 100.
arr = np.random.randint(1, 101, size=(5, 5)) 

print("Original Array:")
print(arr)

# A. Extract the elements from the second row and third column.
second_row = arr[1, :]
third_column = arr[:, 2]

print("\nSecond Row:")
print(second_row)

print("\nThird Column:")
print(third_column)

# B. Replace all the values in the second row with zeros.
arr[1, :] = 0

print("\nArray after replacing second row with zeros:")
print(arr)

# C. Extract a 3x3 sub-array starting from the third row and second column.
sub_array = arr[2:5, 1:4]

print("\n3x3 Sub-array:")
print(sub_array)