क्रम \(1,3,6,10,15,\ldots\) का (7)वाँ पद क्या है?
What is the (7)th term of \(1,3,6,10,15,\ldots\)?
Explanation opens after your attempt
C. (28)
Concept
This is a triangular-number sequence. The (7)th term is (1+2+3+4+5+6+7=28).
Why this answer is correct
The correct answer is C. (28). This is a triangular-number sequence. The (7)th term is (1+2+3+4+5+6+7=28).
Exam Tip
यह त्रिभुज संख्याओं का क्रम है। (7)वाँ पद (1+2+3+4+5+6+7=28) है।
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