Math, asked by 7006295748, 18 days ago

verify 1+2+3+....+n= n(n+1)/2. takin n=6 and 15.

Answers

Answered by rrshamsundar

0

Answer:

I think It is 750 nm^2 yeah it's correct

Answered by vaibhavmittal9105

0

Answer:

21 &120

Step-by-step explanation:

by putting the value 6&15

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