# import necessary libraries
import pandas as pd
# define your series
my_series = pd.Series([10, 20, 30, 40, 50, 60])
# create a boolean mask of True/False
mask = [True, False, True, False, True, False]
# use the boolean mask to extract values at 0, 2, 4
result = my_series[mask]
# print the result
print(result)