# ----------1---------
for i in range(10,20):
if i % 2 == 0:
print(i)
print("/n")
# -----2---------
for i in range(10):
print(f"2^{i} = {2**i}")
# --------3--------
i = 0
while i != 11:
i += 1
# ----------1---------
for i in range(10,20):
if i % 2 == 0:
print(i)
print("/n")
# -----2---------
for i in range(10):
print(f"2^{i} = {2**i}")
# --------3--------
i = 0
while i != 11:
if i % 2 == 0:
print(i)
i += 1