Prove of Sum of all natural number equal to -1/12 1+2+3+4+5+6+7+8+9+…………… ∞ = -1/12 S1 = 1-1+1-1+1-1+1-1+1………. ∞ S1 = (1-1)+(1-1)+(1-1)+(1-1)+(1-1)+..…. ∞ S1 = 0 + 0 + 0 + 0 + 0 +…….∞ S1 = 0 S1 = 1-1+1-1+1-1+1-1+1………. ∞ S1 = 1+(-1+1)+(-1+1)+(-1+1)+(-1+1)+……. ∞ S1 = 1+ 0 + 0 + 0 + 0 … Continue reading RAMANUJAN INFINITE SUMMATION SERIES OF NATURAL NUMBER