Ответ:

ПРОГРАММА 1:

a = int(input())

b = int(input())

n = 1

for i in range(a,b+1):

   if (i*6)%10 == 2:

       n*=i

print(n)

ПРОГРАММА 2:

n = int(input())

summ = 0

for i in range(1, n):

   print(f"{i}*{i+1}",end="+" if i < n-1 else "=")

   summ += i * (i+1)

print(summ)

ПРОГРАММА 3:

a = int(input())

summ = 0

b = []

for i in range(0,a):

   b = int(input())

   summ+=b

print(summ)