यदि \(a_1=10\) और (r=-2) है, तो पहले (5) पदों का योग क्या होगा?
If \(a_1=10\) and (r=-2), what will be the sum of the first (5) terms?
Explanation opens after your attempt
C. (110)
Concept
The terms are (10,-20,40,-80,160), and their sum is (110). Add signs carefully with a negative ratio.
Why this answer is correct
The correct answer is C. (110). The terms are (10,-20,40,-80,160), and their sum is (110). Add signs carefully with a negative ratio.
Exam Tip
पद (10,-20,40,-80,160) हैं और योग (110) है। ऋणात्मक अनुपात में चिह्नों को ध्यान से जोड़ें।
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