sir Q.11. Number of rational terms in the expansion of 2 x + 3 y 1 3 48 is Share with your friends Share 0 Neha Sethi answered this Dear student In the expansion of 2x+3y1348 ,the general term is given by :Tr+1=48Cr2xr3y48-r3 , where 0≤r≤48=48Cr 2rxr2y48-r3×348-r3For the terms to be rational, r must be a multiple of 2 and 48-r must be a multiple of 3.The possible values of r are 6,12,18,24,30,36,42Thus, number of rational terms=7 Regards 0 View Full Answer