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# Start coding here... 
import pandas as pd

df = pd.DataFrame({
    'name': ['Alice', 'Bob', 'Charlie', 'David'],
    'age': [25, 30, 20, 35],
    'salary': [50000, 70000, 60000, 80000]
})



df1 = df['age'].isin([25])
df[df1]
import numpy as np

x= np.array([9,5])
y= np.array([16,12])

print(np.logical_or(x < 5,y > 15))