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

A code consists of 2 letters followed by 2 digits. The available letters are A, B, C, and D, and the available digits are 1, 2, and 3. If repetition is not allowed, how many codes are possible?

Answer and explanation

Correct answer: 72 codes

The two letter positions can be filled in 4 × 3 ways, and the two digit positions in 3 × 2 ways. By the multiplication principle, there are 4 × 3 × 3 × 2 = 72 codes.

Related tags

Permutations And CombinationsFundamental Counting PrincipleFundamental Principle Of CountingMathematicsClass 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.