Blended learning is a way of teaching that mixes traditional classroom lessons with online learning. This method offers three main benefits. First, it gives students more flexibility. This means students can learn at their own pace and choose when to study, which is beneficial to students of different levels and those who have busy schedules. Second, blended learning provides a variety of learning materials. Students can watch videos, read articles, and do interactive activities. This variety makes learning more interesting and can help students understand better because they can learn in different ways. Third, blended learning improves computer skills. As students use technology for their studies, they become more skilled at using computers and the internet. This is important because computer skills are needed in many jobs today. In short, blended learning not only makes learning more interesting and flexible, but it also prepares students for a future with modern technology.

def tong(n):

if n <= 0:

print(“Vui lòng nhập một số nguyên dương.”)

return 0

a = 0

while n > 0:

a = a + n % 10

n //= 10

return a

n = int(input(“Nhập một số nguyên dương n: ”))

print(f“Tổng các chữ số của {n} là:”, tong(n))

a)

a = “Viet Nam”

b = “a”

print(len(a))

b)

a = “Viet Nam”

b = “a”

print(a.find(b))

a)

a = “Viet Nam”

b = “a”

print(len(a))

b)

a = “Viet Nam”

b = “a”

print(a.find(b))