Find the sum of natural numbers 51 to 100
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It is basically in the form of A.P. i.e. 51,52,53,54.....100
n= total no. of terms in A.P. = 50
a= first term= 51
l= last term= 100
So Sum= n/2 (a+l) = 50/2 (51+100) = 25× 151 = 3775
n= total no. of terms in A.P. = 50
a= first term= 51
l= last term= 100
So Sum= n/2 (a+l) = 50/2 (51+100) = 25× 151 = 3775
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