Advertisements
Advertisements
प्रश्न
Find the sum to n terms of the series 3 × 8 + 6 × 11 + 9 × 14 +…
Advertisements
उत्तर
The given series is 3 × 8 + 6 × 11 + 9 × 14 + …
an = (nth term of 3, 6, 9 …) × (nth term of 8, 11, 14, …)
= (3n) (3n + 5)
= 9n2 + 15n
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
