If Else Pandas

import numpy as np
import pandas as pd
df = pd.DataFrame({
    'maths' : [80, 89, 90, 20],
    'science' : [40, 50, 90, 100],
    'language' : [20, 30, 90, 95]
})
df
maths science language
0 80 40 20
1 89 50 30
2 90 90 90
3 20 100 95 
df['masc_pass'] = np.where((df['maths'] > 50) & (df['science'] > 50), 'pass', 'fail')
df
maths science language masc_pass
0 80 40 20 fail
1 89 50 30 fail
2 90 90 90 pass
3 20 100 95 fail 
df['pass'] = np.where((df['maths'] > 50) & (df['science'] > 50) & (df['language'] > 50), 'pass', 'fail')
df
maths science language masc_pass pass
0 80 40 20 fail fail
1 89 50 30 fail fail
2 90 90 90 pass pass
3 20 100 95 fail fail