A = 5d = 5 L = 195=> a + (n-1)d = 195 => 5 + (n-1)(5) = 195=> (n-1)(5) = 190=> n - 1 = 38=> n = 39 SN = 39/2 [ 5 + 195]= (39)(200) /2= 39 × 100= 3900Required sum = 3900
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