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 A = {1,2} and B = {a,b,c}, how many ordered pairs does a function from A to B contain?

Answer and explanation

Correct answer: 2

The governing concept is the requirement that a function assign exactly one image to every element of its domain. The domain here is A = {1,2}, so it has |A| = 2 elements. A function from A to B must therefore contain one ordered pair beginning with 1 and one ordered pair beginning with 2, giving exactly two ordered pairs. The codomain B determines the possible choices of images, not the number of pairs in a completed function. There are 3 choices for the image of each input, so six different functions can be formed in total, but each individual function still has two pairs. Thus D confuses the number of functions with the number of pairs, while B and C do not follow from the domain size.

Related tags

FunctionsDomainOrdered PairsFunctions As A Special Kind Of RelationRelations And FunctionsMathematicsClass 11 Mcq

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.