Saved Bookmarks
| 1. |
3 के प्रथम नो गुडजो का औसत ज्ञात करे ?A. 21B. 12C. 15D. 18 |
|
Answer» Correct Answer - C According to question =3,6,9,12,15,…. Sum of numbers, `Sn=n/2(2a+(n-1)d)` `Sn=9/2 (2 xx 3 +(9-1)3)` `Sn=9/2 (6+24)` `Sn=9/2 xx 30 =135` `therefore` Required average `=135/9` |
|