SSC CGL 2012 Tier 1

Instructions

For the following questions answer them individually

Question 121

If $$x = 2 + \sqrt{3}, y = 2 - \sqrt{3}$$, then the valuer of $$\frac{x^2 + y^2}{x^3 + y^3}$$ is 

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Question 122

If $$a^2+b^2+c^2=2(a-2b-c-3)$$ then the value of a+b+c is

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Question 123

If $$2x - \frac{1}{2x} = 6$$, then the value of $$x^2 + \frac{1}{16x^2}$$

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Question 124

$$5a + \frac{1}{3a}$$ = 5, the value of 9a2 + $$\frac{1}{25a^2}$$ is 

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Question 125

The area of the triangle formed by the line 5x + 7y = 35, 4x + 3y = 12 and x-axis is

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Question 126

If an obtuse-angled triangle ABC, is the obtuse angle and O is the orthocenter. If = 54$$^{\circ}$$ , then is

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Question 127

If the ratio of areas of two equilateral triangles is 9 : 16, then the ratio of their corresponding sides is

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Question 128

Let BE and CF be the two medians of a $$\triangle$$ ABC and G be their intersection. Also let EF cut AG at O. Then AO : OG is

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Question 129

If S is the circumcentre of and = 50$$^{\circ}$$ , then the value of is

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Question 130

AC and BC are two equal cords of a circle. BA is produced to any point P and CP, when joined cuts the circle at T. Then

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