Class 12 Mathematics - Relations and Functions - One-one function Medium Quiz

Level 18 • 3/50 questions • 35 seconds per question.

Level readiness 3/50 Questions
Time Left 01:45 35 sec/question
RewardsCoins + XP
ModeClassic Quiz
Share
This level needs 47 more active questions. Admin panel me same class, subject, difficulty aur level_no 18 par question add karein.
Question 1 / 3 0 score
Answered 0/3 Correct 0 Time 01:45

पूर्णांकों पर (aRb) तब है जब \(\lfloor \frac{a}{3}\rfloor=\lfloor \frac{b}{3}\rfloor\)। (5) का तुल्यता वर्ग कौन सा है?

On integers, (aRb) holds when \(\lfloor \frac{a}{3}\rfloor=\lfloor \frac{b}{3}\rfloor\). Which is the equivalence class of (5)?

Explanation opens after your attempt
Correct Answer

A. ({3,4,5})

Step 1

Concept

\(\lfloor \frac{5}{3}\rfloor=1\).

Step 2

Why this answer is correct

For (3,4,5), the value of \(\lfloor \frac{a}{3}\rfloor\) is also (1).

Step 3

Exam Tip

In floor-based relations, elements with the same floor value form one class. चरण 1: \(\lfloor \frac{5}{3}\rfloor=1\) है। चरण 2: (3,4,5) के लिए भी \(\lfloor \frac{a}{3}\rfloor=1\) मिलता है। चरण 3: पूर्णांक भाग वाले संबंध में समान पूर्णांक भाग वाले तत्व ही एक वर्ग बनाते हैं।

Open Question Page
Ask Friends

समुच्चय \(A=\{(1,1),(1,2),(2,1),(2,2),(3,2)\}\) पर (aRb) तब है जब दोनों क्रमित युग्मों का दूसरा घटक समान हो। ((1,2)) का तुल्यता वर्ग कौन सा है?

On \(A=\{(1,1),(1,2),(2,1),(2,2),(3,2)\}\), (aRb) holds when the two ordered pairs have the same second component. Which is the equivalence class of ((1,2))?

Explanation opens after your attempt
Correct Answer

A. ({(1,2),(2,2),(3,2)})

Step 1

Concept

The second component of ((1,2)) is (2).

Step 2

Why this answer is correct

The pairs with second component (2) are ((1,2),(2,2),(3,2)).

Step 3

Exam Tip

In component-based relations, all elements with the specified same component form the class. चरण 1: ((1,2)) का दूसरा घटक (2) है। चरण 2: दूसरे घटक (2) वाले युग्म ((1,2),(2,2),(3,2)) हैं। चरण 3: घटक आधारित संबंध में वही घटक समान रखने वाले सभी तत्व वर्ग में आते हैं।

Open Question Page
Ask Friends

पूर्णांकों पर (aRb) तब है जब (a) और (b) में से एक सम और दूसरा विषम हो। यह तुल्यता संबंध क्यों नहीं है?

On integers, (aRb) holds when one of (a) and (b) is even and the other is odd. Why is it not an equivalence relation?

Explanation opens after your attempt
Correct Answer

A. क्योंकि स्वतुल्यता नहीं हैBecause reflexivity fails

Step 1

Concept

Reflexivity requires (aRa) for every integer (a).

Step 2

Why this answer is correct

A number cannot be one even and one odd with itself.

Step 3

Exam Tip

Therefore reflexivity fails, so the relation is not an equivalence relation. चरण 1: स्वतुल्यता के लिए (aRa) हर पूर्णांक (a) के लिए चाहिए। चरण 2: कोई भी संख्या स्वयं के साथ एक साथ सम और विषम नहीं हो सकती। चरण 3: इसलिए स्वतुल्यता टूटती है और संबंध तुल्यता संबंध नहीं है।

Open Question Page
Ask Friends
FAQs

Class 12 Mathematics Quiz FAQs

How many questions are in this quiz?

This level is designed for 50 active questions. Currently 3 questions are available for the selected class and difficulty.

Is there a timer in this quiz?

Yes, the timer uses 35 seconds per question for Medium difficulty and shows the total remaining time on the page.

Can I open each question separately?

Yes, every question has its own SEO-friendly page with answer, explanation and related practice links.