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Define a function, add, which takes two numbers, a and b, and returns their sum.

Define a function, add_up_to, which takes one positive integer, n, and returns sum of all numbers between 0 and n (inclusive). Example:

>>> add_up_to(4)
10 >>>

Restrictions:
- You cannot use range
- You cannot use +
- You cannot use sum

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Write a function, remainder that takes two numbers, x and y and returns the remainder of dividing x by y. Example:
>>> remainder(5, 3)
2

Write a function, quotient that takes two numbers, x and y and returns the quotient of dividing x by y. Example:
>>> remainder(5, 3)
1

Write a function, equal that takes two numbers and returns True if they are equal, or False otherwise.

Write a function, is_balanced_split that takes two numbers, x and y and returns True if the remainder and the quotient of dividing x by y are equal. It returns False otherwise. Example:
>>> is_balanced_split(8, 3)
True
>>> is_balanced_split(6, 5)
True >>> is_balanced_split(5, 3)
False

Restrictions:
- You cannot use %, // or == inside this function's body
- Body of the function should have only one line

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Write a function is_low_battery, that takes an integer, level, and returns True if it is below 20, and False otherwise.

Write a function battery_status, that takes an integer, level and:
- It returns "critical" if level is below 5
- It returns "low" if level is between 5 and 19 (including both)
- It returns "normal" if level is 20 or above

Restriction: You CANNOT use any relational operator inside this function's body (<, >, !=, ...).

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Write a function, add that takes two numbers and returns their sum.

Write a function that takes three numbers and returns their sum.

Restriction: You cannot use + inside this function's body
Hint: You can use add, the function you defined above

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Write a function that takes one number, and returns True if it ends with 4, or False otherwise. Example:
>>> ends_with(14)
True
>>> ends_with(13)
False

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Write a function that takes two numbers, x and y, where y is a single digit number, and returns True if x ends y, or False otherwise. Example:
>>> ends_with(16, 6)
True
>>> ends_with(34, 3)
False

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def quotient(a, b):
    return a // b

def sub(a, b):
    return a - b

def calculate(x, y):
    if quotient(x, y) == sub(x, y):
        return quotient(x, y) + sub(x, y)
    elif quotient(x, y) == 2:
        return quotient(x, y) - sub(x, y)
    
    return quotient(x, y) == quotient(x - 1, y)

Given the above script, what are the results of the following calls:

calculate(3, 2):
calculate(7, 2):
calculate(6, 3):

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def add(a, b):
    while a < b:
        a = a + 1
    return a

def multiply(n):
    while n < 5:
        n = n * 2
    return n

Given the above script, what are the results of the following expressions:

add(2, 4):
multiply(3):
add(1, 2) + multiply(1):

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Complete execution flow of the following program

Misses: 0

def calculate():
    add()
    sub()

def add():
    a = 2
    a = a + a
    a

def sub():
    add()

calculate()

>>>

Complete execution flow of the following program

Misses: 0

def is_po(s):
    if s == 'po':
        return True
    return False

def is_zero(n):
    return n == 0

def aaa(a, b):
    if not is_po(a) and is_zero(b):
        return is_po(a)
    elif not is_zero(b):
        return 'pse'
    else:
        return is_po(a) and is_zero(b)

aaa('pse', 0)