1.

Without doing te actual addition, find the sum of : (i) 1+3+5+7+9+11+13+15+17+19+21+23 (ii) 1+3+5+7+9+....... +39+41 (iii) 1+3+5+7+9+........+51+53

Answer»

Without doing te actual addition, find the sum of :

(i) 1+3+5+7+9+11+13+15+17+19+21+23

(ii) 1+3+5+7+9+....... +39+41

(iii) 1+3+5+7+9+........+51+53



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