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={1,2,3,4} and B={0,1}, what is the total number of functions from A to B?

Answer and explanation

Correct answer: 16

To count functions from a finite set A to a finite set B, use the rule |B|^|A|. Every element of the domain A must independently choose one image from the codomain B. Here |A|=4 and |B|=2, so the number of choices is 2^4=2×2×2×2=16. Equivalently, the images of 1, 2, 3 and 4 can each be selected as either 0 or 1, producing sixteen different assignments. Option B would result from using an incorrect exponent or partial counting, while option D counts only the available codomain elements rather than complete functions. Thus option A is correct. The formula counts all functions, including constant, one-one where possible, and many-one assignments.

Related tags

FunctionsCounting FunctionsDomainCodomainFunctions 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.