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Consider an infinite geometric series with first terma and common ratio r, If its sum is 4 and the second term is 3 /4, ...The sum of an infinitely decreasing G.P. is equal to 4 and the sum of the cubes of its terms is equal to 64 / 7. Then 5t...Let a1, a2, ......, a10 be in A.P. & h1, h2, ...... h10 be in H.P.. If a1 = h1= 2 & a10 = h10 = 3 then a4h7 is -...The geometric mean of n observations x1, x2, x3,.....,xn is...If the sum of four numbers in A.P. be 48 and that the product of the extremes to the means is product of 27 to 48 then t...