Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

If (f:A\to B) and (A={1,2,3,4}), how many ordered pairs will be in the graph of (f)?

Answer and explanation

Correct answer: (4)

Direct answer: Option A, 4. The graph of a function contains exactly one ordered pair for each domain element. Here the domain is \(A=\{1,2,3,4\}\), so it has \(|A|=4\) elements. Therefore the graph contains one pair beginning with 1, one beginning with 2, one beginning with 3, and one beginning with 4. The outputs may repeat, but that does not change the number of pairs. Option A is correct. Option B, 2, is too small and would leave some domain elements without images. Option C, 8, is too large because a function cannot have two different output pairs for one input. Option D, 1, is also too small and would represent only one input, not the whole domain. The question asks for the number of pairs, not the number of distinct output values; even repeated outputs still belong to separate pairs. Memory cue: for a function, number of graph pairs equals the number of domain elements.

Related tags

FunctionsGraphCounting

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.