Find the sum of 1 + 3 + 5 + 7 + 9, without performing the actual summation.
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
Question 7 (i) Without adding, find the sum:
1 +3 + 5+7 + 9