Page 102 - Computer - 8

Computational Skills
Mind Stretching

1. Identify and underline the errors in the code given below. Also, write the correct code.
(a) # Program to display all numbers between 1 and 10 in decreasing order.
for num in range(1, 10, -1):
print(num)
(b) # Program to print the sum of numbers from 1 to 20.
sum = 1
num = 1
while num < 20:
sum = sum + num
print(“The sum of numbers from 1 to 20 = ” sum)

2. Write the output of the following code segments in Python:

(a) for count in range(2, 10):
print(count)
(b) prod = 1
num = 10
while X >= 1:
prod = prod * num
num = num – 1
print(prod)

Lab Work Computational Skills

Write the following in Python:
(a) Program to display the sequence 5, 8, 11, 14, … up to 76.

(b) Program to accept a number from the user and display its table.
(c) Program to accept two numbers from the user and display all even numbers between the two
numbers in decreasing order.
(d) Program to calculate and display the sum of first 10 multiples of 3.
(e) Program to accept three numbers from the user and display all even numbers between the smallest
and largest numbers, excluding the multiples of the third number.

DISCUSS
DISCUSS Communication Skills
Which loop in Python offers more flexibility to be used in most situations? Discuss with your classmates.

TEACHER’S DESK
TEACHER’S DESK
Explain to the students the use of different loops in different situations to create programs in Python.

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