1.

Which of the following are GP? If they are in G.P. Write next three terms? (i) 4,8,16,….. (ii) 1/3, -1/6, 1/12,……. (iii) 5,55,555,…….. (iv) -2, -6, -18,…….. (v) 1/2, 1/4, 1/6,……. (iv) 3,- -3^(2), 3^(3),…….. (vii) x,1,1/x,......... (x ne 0) (viii) 1/sqrt(2), -2, 4sqrt(2),.......... (ix) 0.4, 0.04, 0.004,........

Answer»


Answer :(i) YES; 32,64, 128 , (II) Yes, `-1/24, 1/48, -1/96`
(iii) No, (iv) Yes, `-54, -162, -148`
(V) No
(vi) Yes, `-81, 243, -729` , (vii) yes, `1/x^(2), 1/x^(3), 1/x^(4)`,……
(VIII) Yes, `-16, 32sqrt(2), -128`, (ix) Yes; 0.0004, 0.00004, 0.000004


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