def prob1():
miles = float(input("The length in miles: "))
print("The length in football fields is ", miles*1760/120, ".")
def prob2():
number = input("Enter a number: ")
print( "\"",number,"\" is a nice number.")
def prob3(x, y):
if x < y:
return 2*y+x
else:
return 2*x+y
def prob4(x,n):
accu = 0
for i in range(1, n+1):
accu += (x**i+1)/(x**2+1)
return accu
def prob5(x, n):
accu = 1 #we are multiplying, so we better start out with 1
for i in range(0, n+1):
accu *= (1+x**i)/(2+x**i)
return accu
def prob6():
count = 0
for i in range(1,10001):
if (2*i+1) % 5 == 0 and (i**2+2)%4==3:
count += 1
print(i)
return count