1.

Without adding, find the sum: (i) (1+3+5+7+9+11+13) (ii) (1+3+5+7+9+11+13+15+17+19) (iii) (1+3+5+7+9+11+13+15+17+19+21+23)

Answer»

Without adding, find the sum:
(i) (1+3+5+7+9+11+13)
(ii) (1+3+5+7+9+11+13+15+17+19)
(iii) (1+3+5+7+9+11+13+15+17+19+21+23)



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