Question

In Python

A child is required to use a booster seat in a car until the child is 9 years old, unless the child reaches the height of 59 inches before age 9. Which expression can be used to decide if a child requires a car seat or not?

	a.	if age < 9 or height < 59:
	b.	if age >= 9 or height >= 59:
	c.	if age >= 9 and height >= 59:
	d.	if age <= 9 and height <=59:
	e.	None of the above

What conditions have to be true to make the following code display "B"?

if color == 'red':
    if style < 3:
        print('A')
    elif style < 5:
        print('B')
    else:
        print('C')
elif color == 'blue':
    print('D')

	a.	color is 'blue' and style is 3
	b.	color is 'red' and style is 6
	c.	color is 'red' and style is 5
	d.	color is 'red' and style is 4
	e.	None of the above

What conditions have to be true to make the following code display "B"?

if color == 'red':
    if style < 3:
        print('A')
    elif style < 5:
        print('B')
    else:
        print('C')
elif color == 'blue':
    print('D')

	a.	color is 'blue' and style is 3
	b.	color is 'red' and style is 6
	c.	color is 'red' and style is 5
	d.	color is 'red' and style is 4
	e.	None of the above

Which statement is equivalent to the following assignment?

x -= 2 + y

	a.	x = 2 + y - x
	b.	x = -(2 + y)
	c.	x = x - (2 + y)
	d.	x = x - 2 + y
	e.	None of the above

Which of the following data values is best represented with a floating point variable?

	a.	The speed of a snail.
	b.	None of the other options
	c.	The number of children in a classroom.
	d.	The number of acorns in a tree.
	e.	The number of pets in a house.

Answer 1

1) A child requires a car seat when he attains a age of atleast age greater than or equal to 9 and height greater than or equal to 59 .

Answer :

b.	if age >= 9 and height >= 59:

2) and  3)  

if color == 'red':
    if style < 3:
        print('A')
    elif style < 5:
        print('B')
    else:
        print('C')
elif color == 'blue':
    print('D')

In the above code the contents of  if statement contains the print('B') which would be executed only when the inner elif condition is reached and style < 5 is true i.e, (style = 4)

style < 5 is true

If the color = 'red' and style = 4 then the above if-else statements prints B to output.

Answer :

d.	color is 'red' and style is 4

4) x -= 2 + y

This statement is decrementing the value of x by (2+y) which is equivalent to x = x - (2+y)

Answer :

c.	x = x - (2 + y)

5) floating point Variable is used to store decimal values . Remember that a number is always is a integer.

Answer :

a.	The speed of a snail.

speed = distance / time , which means we get a fraction which is a decimal value or floating point