sum of first 20 odd natural number
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Answered by
15
1+3+5+7+9+11+13+15+17+19+21+23+25+27+31+33+35+37+39+41=412
dabholkar:
wrong
Answered by
39
1+3+5+7+9+11+13+15+17+19+21+23+25+27+29+31+33+35+37+39=400
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