क्रम \(12,21,30,39,\ldots\) में पहले कितने पदों का योग (150) है?
How many first terms of \(12,21,30,39,\ldots\) have sum (150)?
Explanation opens after your attempt
B. (5)
Concept
The first (5) terms are (12,21,30,39,48). Their sum is (150).
Why this answer is correct
The correct answer is B. (5). The first (5) terms are (12,21,30,39,48). Their sum is (150).
Exam Tip
पहले (5) पद (12,21,30,39,48) हैं। उनका योग (150) है।
Login to save your score, XP, coins and progress.
