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+//Example No. 4_11
+//Addition of Chain of Numbers
+//Pg No. 77
+clear ; close ; clc ;
+
+x = 9678 ;
+y = 678 ;
+z = 78 ;
+d = 4 ;  //length of mantissa
+fx = x/10^4
+fy = y/10^4
+fu = fx + fy
+Eu = 4
+if fu >= 1 then
+    fu = fu/10
+    Eu = Eu + 1
+end
+//since length of mantissa is only four we need to maintain only four places in decimal, so
+fu = floor(fu*10^4)/10^4
+u = fu * 10^Eu
+w = u + z
+n = length(string(w))
+w = floor(w/10^(n-4))*10^(n-4) //To maintain length of mantissa = 4
+disp(w,'w = ')
+True_w = 10444
+ew = True_w - w
+er_w = (True_w - w)/True_w
+disp(er_w,'er,w = ',ew,'ew = ',True_w,'True w = ')
+\ No newline at end of file