اختبار إلكتروني: Statements, Conditionals and Biconditionals - Reveal
Conditional statements form the foundation of logical reasoning and geometry. A conditional statement consists of a hypothesis (the 'if' part) and a conclusion (the 'then' part). From a given conditional statement 'If p, then q', various related statements can be formed: the converse (If q, then p), the inverse (If not p, then not q), and the contrapositive (If not q, then not p). Additionally, a biconditional statement (p if and only if q) indicates that both the statement and its converse are true.
رقم الاختبار977
الصفالصف التاسع
المادةرياضيات
الفصلالفصل الثالث
السنة الدراسية2025/2026
عدد الأسئلة10
إجمالي النقاط10
تاريخ الإضافة2026-04-23
الزيارات18
المعلم أو الناشرAmal Salman
اختر إجابة واحدة لكل سؤال. عند الاختيار ستظهر النتيجة فورًا: الأخضر صحيح، والأحمر خطأ، وسيظهر تفسير الإجابة مباشرة إن كان متوفرًا. وبعد آخر سؤال ستظهر الدرجة النهائية تلقائيًا.
Question 1
Points: 1
What is the converse of the statement: 'If a number is divisible by 20, then it is even.'
Explanation
The converse of a statement 'If p, then q' is 'If q, then p'. Here, the conclusion 'it is even' becomes the hypothesis, and the hypothesis 'a number is divisible by 20' becomes the conclusion.
Question 2
Points: 1
What is the truth value of the statement, If \(2x - 5 = 19\), then \(x = 12\).
Explanation
Solving the equation \(2x - 5 = 19\) by adding 5 to both sides gives \(2x = 24\), and dividing by 2 results in \(x = 12\). Since the conclusion matches the calculated value, the statement is true.
Question 3
Points: 1
What phrase does a biconditional statement use?
Explanation
Biconditional statements represent the combination of a conditional statement and its converse, linked by the phrase 'if and only if'.
Question 4
Points: 1
Write the statement 'Vertical Angles are congruent' as a conditional statement.
Explanation
A conditional statement is written in the form 'If p, then q'. In this case, being vertical is the condition (hypothesis) that leads to them being congruent (conclusion).
Question 5
Points: 1
Given, 'If I have a Siberian Husky, then I have a dog.' Identify the contrapositive.
Explanation
The contrapositive of 'If p, then q' is 'If not q, then not p'. Here, we negate both the hypothesis and conclusion and swap their positions.
Question 6
Points: 1
If Jimmy goes on vacation, then he will go to Orlando. What is the hypothesis of the given Conditional Statement?
Explanation
The hypothesis is the part of a conditional statement that follows the word 'if'.
Question 7
Points: 1
If it is dark outside, then it is night. What is the converse to this statement?
Explanation
The converse swaps the hypothesis ('it is dark outside') with the conclusion ('it is night').
Question 8
Points: 1
If you live in Montreal, then you live in Canada. What is the inverse to this statement?
Explanation
The inverse of 'If p, then q' is 'If not p, then not q'. This is achieved by negating both the hypothesis and the conclusion without swapping them.
Question 9
Points: 1
What is this mean? \(\sim q \rightarrow \sim p\)
Explanation
In symbolic logic, \(\sim q \rightarrow \sim p\) represents the contrapositive of the original statement \(p \rightarrow q\).
Question 10
Points: 1
What does this mean? \(\sim p \rightarrow \sim q\)
Explanation
In symbolic logic, \(\sim p \rightarrow \sim q\) represents the inverse of the original statement \(p \rightarrow q\).
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