Question

8.
nth term of 1+ (1+2) + (1+2+3)+........... (1+2+3+...+n) is
n(n+1)
3) n(n+1)
2) n° (n+1)
4) n²​

Answer 1

Answer:

n^th terms =(1+2+3+4....n^th ) ~n*(n+1)/2