import numpy as np

n = 10000

#V=virker, D=defekt
sample_space = 10*['V']+5*['D']

gunstige = 0

for k in range (0, n):
    valg = np.random.choice(sample_space, 5, False)
    valg.sort()
    
    if ( valg[-3] == 'V' ): 
        gunstige = gunstige + 1
        
print('Gunstige oppnaaes med en hyppighet:',
      f'{gunstige/n :.4f}')