def p45():
n = 100000
t = triangular_n(1, n)
p = pentagonal_n(1, n)
h = hexagonal_n(1, n)
return set.intersection(t, p, h)
def p42():
tnumbers = triangular_n(1, 20, 'set')
words = readFromFile("p42.txt")
count = 0
for word in words:
val = alphabetical_value(word, 'uppercase')
if val in tnumbers : count += 1
return count