Pattern recognition in Intro to Computing - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to print the first 5 even numbers.

Intro to Computing

for i in range(1, 11):
    if i [1] 2 == 0:
        print(i)

Drag options to blanks, or click blank then click option'

A%

B-

C*

D+

Attempts:

3 left

💡 Hint

Common Mistakes

Using '+' or '-' instead of '%' causes a syntax or logic error.

Using '*' will multiply numbers, not check evenness.

The % operator checks the remainder. If i % 2 == 0, then i is even.

2fill in blank

medium

Complete the code to find the sum of numbers from 1 to 5.

Intro to Computing

total = 0
for num in range(1, 6):
    total [1]= num
print(total)

Drag options to blanks, or click blank then click option'

A+

B-

C*

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using '-' will subtract instead of adding.

Using '*' or '/' will cause incorrect calculations.

The += operator adds the right value to the variable on the left.

3fill in blank

hard

Fix the error in the code to print numbers from 1 to 5.

Intro to Computing

for i in [1](1, 6):
    print(i)

Drag options to blanks, or click blank then click option'

Adict

Blist

Cstr

Drange

Attempts:

3 left

💡 Hint

Common Mistakes

Using list alone does not generate numbers.

Using str or dict causes errors in loops.

The range function generates a sequence of numbers, perfect for loops.

4fill in blank

hard

Fill both blanks to create a dictionary of squares for numbers 1 to 5.

Intro to Computing

squares = {x[1]2: x[2]2 for x in range(1, 6)}

Drag options to blanks, or click blank then click option'

A**

B*

C+

D-

Attempts:

3 left

💡 Hint

Common Mistakes

Using '+' or '-' will add or subtract instead of squaring.

Using '*' will multiply by 2, not square.

The ** operator is used for exponentiation (power) to compute squares.

5fill in blank

hard

Fill all three blanks to create a dictionary of uppercase words with their lengths, only for words longer than 3 letters.

Intro to Computing

result = { [1]: [2] for word in words if len(word) [3] 3}

Drag options to blanks, or click blank then click option'

Aword.upper()

Blen(word)

C>

Dword

Attempts:

3 left

💡 Hint

Common Mistakes

Using word instead of word.upper() for keys.

Using '<' instead of '>' causes wrong filtering.

We use word.upper() for uppercase keys, len(word) for values, and filter words with length greater than 3 using >.