1
IIT-JEE 2007
MCQ (Single Correct Answer)
+4
-1
Let $${A_1}$$, $${G_1}$$, $${H_1}$$ denote the arithmetic, geometric and harmonic means, respectively, of two distinct positive numbers. For $$n \ge 2,\,Let\,{A_{n - 1}}\,\,and\,\,{H_{n - 1}}$$ have arithmetic, geometric and harminic means as $${A_n},{G_n}\,,{H_n}$$ repectively.

Which one of the following statements is correct ?

A
$${A_1} > {A_2}\, > {A_3} > ...$$
B
$${A_1} < {A_2}\, < {A_3} < ...$$
C
$${A_1} > {A_2}\, > {A_3} > ...$$ and $${A_1} < {A_2}\, < {A_3} < ...$$
D
$${A_1} < {A_2}\, < {A_3} < ...$$ and $${A_1} > {A_2}\, > {A_3} > ...$$
2
IIT-JEE 2007
MCQ (Single Correct Answer)
+4
-1
Let $$\,{V_r}$$ denote the sum of first r terms of an arithmetic progression (A.P.) whose first term is r and the common difference is (2r-1). Let $${T_r} = \,{V_{r + 1}} - \,{V_r} - 2\,\,\,and\,\,\,{Q_r} = \,{T_{r + 1}} - \,{T_r}\,for\,r = 1,2,...$$

Which one of the following is a correct statement?

A
$${Q_1},\,\,{Q_2},\,\,{Q_3},...$$ are A.P. with common difference 5
B
$${Q_1},\,\,{Q_2},\,\,{Q_3},...$$ are A.P. with common difference 6
C
$${Q_1},\,\,{Q_2},\,\,{Q_3},...$$ are A.P. with common difference 11
D
$${Q_1} = \,\,{Q_2} = \,\,{Q_3} = ...$$
3
IIT-JEE 2007
MCQ (Single Correct Answer)
+4
-1
Let $${A_1}$$, $${G_1}$$, $${H_1}$$ denote the arithmetic, geometric and harmonic means, respectively, of two distinct positive numbers. For $$n \ge 2,\,Let\,{A_{n - 1}}\,\,and\,\,{H_{n - 1}}$$ have arithmetic, geometric and harminic means as $${A_n},{G_n}\,,{H_n}$$ repectively.

Which one of the following statements is correct ?

A
$${G_1} > {G_2}\, > {G_3} > ...$$
B
$${G_1} < {G_2}\, < {G_3} < ...$$
C
$${G_1} = {G_2}\, = {G_3} = ...$$
D
$${G_1} < {G_2}\, < {G_3} < ...$$ and $${G_1} > {G_2}\, > {G_3} > ...$$
4
IIT-JEE 2007
MCQ (Single Correct Answer)
+3
-0.75
Let $$O\left( {0,0} \right),P\left( {3,4} \right),Q\left( {6,0} \right)$$ be the vertices of the triangles $$OPQ$$. The point $$R$$ inside the triangle $$OPQ$$ is such that the triangles $$OPR$$, $$PQR$$, $$OQR$$ are of equal area. The coordinates of $$R$$ are
A
$$\left( {{4 \over 3},3} \right)$$
B
$$\left( {3,{2 \over 3}} \right)$$
C
$$\left( {3,{4 \over 3}} \right)$$
D
$$\left( {{4 \over 3},{2 \over 3}} \right)$$
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