Without actual addition, find the sum of the following:- (i)1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23 + 25 + 2 ( PLZZ ANSWER FAST OR U WOULD HAVE VERY BAD EXPERIENCES)
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Answer:
=1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23 + 25+2
=4+5 + 7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23 + 25+2
=9+7 + 9 + 11 + 13 + 15 + 17 + 19 + 21 + 23 + 25+2
=16+9 + 11 + 13 + 15 + 17 + 19 + 21 + 23 + 25+2
=22+11 + 13 + 15 + 17 + 19 + 21 + 23 + 25+2
=33+13 + 15 + 17 + 19 + 21 + 23 + 25+2
=46+15 + 17 + 19 + 21 + 23 + 25+2
=61+15 + 17 + 19 + 21 + 23 + 25+2
=76+17 + 19 + 21 + 23 + 25+2
=93+19 + 21 + 23 + 25+2
=93+19+44+27
=112+ 71
=183
hence the answer is 183.
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