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

Which sequence is not an arithmetic progression even though the first two differences look equal?

Answer and explanation

Correct answer: (2, 6, 10, 15, …)

The defining condition for an arithmetic progression is that every consecutive difference must be the same, not merely the first one or two. In option A, the first differences are 6 − 2 = 4 and 10 − 6 = 4, but the next difference is 15 − 10 = 5. Because the difference changes from 4 to 5, this sequence is not an AP. In option B, all displayed differences are 5; in option C, they are −4; and in option D, they are 0. Therefore option A is the only sequence that fails the definition. This question emphasizes why all available consecutive differences should be checked before classifying a sequence.

Related tags

Arithmetic ProgressionCommon DifferenceNon-ApIntroduction To Aps And Common Difference.Introduction To Aps And Common DifferenceArithmetic Progressions (Ap)Arithmetic Progressions ApMathematics

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.