Skip to content

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

Class 10 Mathematics Arithmetic Progressions (AP)Finding the sum of the first $n$ terms of an APExpert

0 reads0 ratings0 helpful

In an arithmetic progression (S_{10}=345) and (S_{20}=1390). What is (S_{30})?

Answer and explanation

Correct answer: (3135)

These give (a=3) and (d=7), so (S_{30}=3135). Exam tip: first find (a) and (d) from the two sums.

Related tags

Ap Two-Sums-Next-Sum Expert Finding The Sum Of The First $N$ Terms Of An Ap Finding The Sum Of The First N Terms Of An Ap Arithmetic Progressions (Ap)Arithmetic Progressions Ap Mathematics

सुधार सुझाएँ / Earn

Student feedback

Was this question useful?

No ratings yetWrite a review / Rate this question

Was this question useful?

👍 0 Helpful 👎 0 Not helpful

Difficulty

Easy0%

Medium0%

Hard0%

Was the explanation clear?

Yes 0% No 0%

0 responses

Student Reviews

No published reviews yet.

Found an issue? Help improve this question My reports and replies