Find the sum
....,+ 20
(a) 1 + 2 + 3 + ...
(b) 3+ 6 +9+...
(c) 5+ 8 + 11 +
.....
*** ............ +60
.........+ 62
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2
Answer:
a)4,b)12,c)14 it is the ans according to me
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