Question

Without adding, find the sum of the following:
(i) 1+3+5+7+9+11+13
(ii) 1+3+5+7+9+11+13+15+17
(iii) 1 + 3 + 5+7+9+ 11 +13+ 15 + 17 +19+21
(iv) 1+3+5 + 7 +9+11 +13+15+17+19+21+23+
25 +27
Express the following as the sum of odd numbers:
(i) 36 (ii) 64 (iii) 120 (iv) 168
Find the Pythagorean triplet, if its first member is :
(i) 6
(ii) 12 (iii) 18 (iv) 30​

Answer 1

Answer:

(i) 49

(ii) 81

(iii) 121

(iv) 196

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