Muft Shiksha
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
Class 9MathematicsSequences and ProgressionsExplicit or general ruleExpert
0 reads0 ratings0 helpful

What is the (n)th term of the sequence (42,36,30,24,\ldots)?

Answer and explanation

Correct answer: (a_n=48-6n)

The first term is (42) and the difference is (-6), so (a_n=42+(n-1)(-6)=48-6n). Keep the difference negative for a decreasing sequence.

Related tags

SequencesProgressionsDecreasing-SequenceGeneral-RuleExplicit Or General RuleSequences And ProgressionsMathematicsClass 9 Mcq
सुधार सुझाएँ / Earn

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

KEEP PRACTISING

10 more MCQs
  1. 1For the sequence 2, 5, 10, 17, 26, ..., the nth term is a_n = n² + 1. What is the value of a_12 − a_10?
  2. 2For the sequence 6, 14, 26, 42, ..., a_n = 2n² + 2n + 2. What is the value of a_15 - a_13?
  3. 3If a_n = (-1)^n(n + 1), what will be the value of a_7 + a_8?
  4. 4What will be the next term in the sequence (1, 2, 6, 24, 120, …)?
  5. 5If a_n = n(n + 3), which term is 130?
  6. 6If a_n = 5n + (−1)^n, what will be the value of a_10 − a_9?
  7. 7If a_n = 4n^2 + 2n - 3, what will be the value of a_11?
  8. 8If a_n = (-1)^(n+1)(2n+3), what will be the value of a_8 + a_9?
  9. 9If a_n = n^2 + 6n + 5, which term is 252?
  10. 10What is the general term of the sequence (3, 6, 9, 12, …)?
Found an issue? Help improve this questionMy reports and replies

Add Muft Shiksha to your Home Screen

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