find the sum of first 50 odd natural numbers
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Answered by
5
sum = n/2 { 2a + ( n-1) d}
sum= 25 { 2 + (49)1
= 25 { 51 }
= 1275
sum= 25 { 2 + (49)1
= 25 { 51 }
= 1275
Answered by
3
1+3+5+7+9+11+13+15+17+19+21+23+25+27+29+31+33+35+37+39+41+43+45+47+49
=625
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=625
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