Math, asked by AksNema6681, 1 year ago

What is the sum of



a.P 1+(1+2)+(1+2+3)+.......?

Answers

Answered by sanskruti1842
0

Answer:

1+2+3+4 is the required value

Answered by deepvrm
0

Step-by-step explanation:

first of all consider nth term which is sum of n natural number. question is actually sum of Tn terms so I have used a formula on simplifying the Tn and used formula give in NCERT class 11 book.

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