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

In arrangements of (ENGINEER), how many distinct arrangements have all vowels together?

Answer and explanation

Correct answer: (240)

The direct answer is B: 240. ENGINEER has four vowels: E, E, E and I, and four consonants: N, N, G and R. To keep all vowels together, treat the four vowels as one block. Then there are five objects: the vowel block, N, N, G and R. These can be arranged in \(5!/2!=60\) ways because N is repeated. Inside the vowel block, the arrangements are \(4!/3!=4\), because E is repeated three times. Therefore the total is \((5!/2!)(4!/3!)=60\times4=240\). Option B is correct. Option A, 180, omits valid orders. Option C, 360, overcounts one repeated group. Option D, 480, overcounts further. The block method must be combined with repetition corrections.

Related tags

PermutationsWordsVowel Block

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.