Find the sum of 13 + (-12) + (-6) +1
Find the sum of the series 131+13+231+3+13+23+331+3+5+−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−12terms
Find the sum of the series : 3 + 5 + 7 + 6 + 9 + 12 + 9 + 13 + 17 + .... to 3n terms.
Find the sum of 156 and 1336