the first term of a gp is a and the last term is l prove that the product of the pth term from the beginning and the pth term from end is al
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The A.P. is - a,.....,l
Therefore pth term from the beginning= ar^(p-1)
On reversing the A.P., the new A.P. is -. l,...... ,a
Therefore pth term from the end= l/r^(p-1)
Hence,product of the pth term from the beginning and the pth term from end= ar(p-1) * l/r^(p-1) = al
Thus proved
Therefore pth term from the beginning= ar^(p-1)
On reversing the A.P., the new A.P. is -. l,...... ,a
Therefore pth term from the end= l/r^(p-1)
Hence,product of the pth term from the beginning and the pth term from end= ar(p-1) * l/r^(p-1) = al
Thus proved
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