Question

Python Activity 05 Boolean Expressions - POGIL (5) - Word Search m Layout References Mailings Review View Help Critical Thinking Questions Programming Structures Sequence Structure Decision or Branching Structure Looping Structure FALSE Which structure best describes the types of Python programs you have written so far? _sequence structure Which structure allows the programmer to create code that decides what code is executed? FYI: Conditional operators, also known as relational operators, are used to compare the relationship between two operands. Expressions whose result can only be true or false are known as Boolean expressions. State the meaning of each of the following conditional operators. If you are not sure of the meaning of any symbol, create some example expressions, type them into the Python interpreter (See Figure to the right) and examine the results. >>> 34 < 56 b.

Answer 1

1.sequence

2. decision or branching because decide for execute which part of code based on some conditions.

3.

>>> 24 <25
True
>>> 85>25
True
>>> 23<=63
True
>>> 54>=25
True
>>> 5!=5
False
>>> 6==6
True

Python 3.8 (64-bit) Python 3.8.2 (tags/v3.8.2:7b3ab59, Feb 25 2020, 23:03:10) Type "help", "copyright", "credits" or "license" for more >>> 24 <25 True >>> 85>25 True >>> 23<=63 True >>> 54>=25 True >>> 5!=5 False >>> 6==6 True

4.

>>> x=4
>>> y=5
>>> z=4
>>> x>y
False
>>> x<y
True
>>> x==y
False

>>> x!=y
True
>>> x>=z
True
>>> x<=z
True
>>> x+y>2*x
True
>>> y*x-z!=4%4+16
False
>>> pow(x,2)==abs(-16)
True

>>> X=4 >>> y=5 >>> Z=4 >>>> x>y False >>> x<y True >> X==y False

>>> x!=y True >>> XX=Z True >>> X<=Z True >>> x+y>2*X True >>> y*x-z!=4%4+16 False >>> pow(x,2)==abs(-16) True

5.

>>> word1="hello"
>>> word2="good-bye"
>>> word1==word2
False
>>> word1!=word2
True
>>> word1<word2
False
>>> word1>=word2
True

>>> word1="hello" >>> word2="good-bye" >>> word1==word2 False >>> word1!=word2 True >>> word1<word2 False >>> word1>=word2 True >>>

6. Python compares string lexicographically i.e using ASCII value of the characters.

Suppose you have word1 as "hello" and word2 as "good-Bye". The first two characters from str1 and str2 ( H and G ) are compared. As they are not equal h greater than g.

8. Logical operator are and,not,or

age>=17 and hasLicence==true , The and operator return true onle when both operands are true. Here if age>=17 true and hasLicence==true is true then the result will be true other wise return false.

cost<20 or shipping==0.00 , or operator return true either one of the opernad is true. if cost<20 return true the output will true. if shipping ==0.00 the output will be true.

not(credit>120) not opertor invert the operand. Here credit>120 is true the output will be false.

9.>>> (numBooks>5) and (numBooks<100)
True
>>> (numBooks<5) or (numBooks>100)
False
>>> not(numBooks*10==100)
True

>>> (numBooks>5) and (numBooks<100) True >>> (numBooks<5) or (numBooks >100) False >>> not (numBooks*10==100) True

Application questions

1.

>>> num1=10
>>> num2=10
>>> num1==num2
True

>>> num1=10 >>> num2=10 >>> num1==num2 True

2.

>>> time=5
>>> maxTime=10
>>> cost=10
>>> maxCost=100
>>> (time<maxTime) or (cost<maxCost)
True

>>> time=5 >>> maxTime=10 >>> cost=10 >>> maxCost=100 >>> (time<maxTime) or (cost<maxCost) True >>>

3.

>>> weight=50
>>> cost=100
>>> (weight<10) and (not(cost>20))
False

>>> weight=50 >>> cost=100 >>> (weight<10) and (not(cost>20)) False >>>

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