python

a = 5

b = 6

c = 7

print(pow(b,2) -4*a*c)

x=1.5

x=True

x='abc'，则x值为（ ）。

for n in range(100,200):

    i = n // 100

    j = n // 10 % 10

    k = n % 10

    if n == i ** 3 + j ** 3 + k ** 3:

        print(n)

str1 = "mysqlsqlserverPostgresQL"

str2 = "sql"

ncount = str1.count(str2,10)

print(ncount)

for i in range(1,10,2):

     print(i,end=",")

sum = 0

for i in range(2,101):

    if i % 2 == 0:

       sum += i

    else:

       sum -= i

print(sum)