Question

3. Without actual calculations, find the following sums.
(i) 1 + 3 + 5 + 7 + 9 +11
(ii) 1+3+5+7+9+ 11 + 13 + 15 + 17 +19+21
(iii) 11 +13 + 15 +17 + 19 + 21 + 23 + 25 + 27 +29
(iv) 13 + 15 + 17 + 19 + 21 + 23
CCategorie lo​

Answer 1

Answer:

36

121

200

108

ur answer are here

Answer 2

( i ) 1 + 3 + 5 + 7 + 9 + 11 :-

$\boxplus \: \: \bold{solution}\Downarrow$

$\longmapsto1 + 3 + 5 + 7 + 9 + 11$

$\longmapsto4 + 12 + 20$

$\longmapsto16 + 20$

$\longmapsto \red36$