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The area of the circle with radius Y is W. The difference between the areas of the bigger circle (with radius Y) and that of the smaller circle (with radius X) is W'. So x/y is equal to

A) 1	B) 2
C) 3	D) 4

A) 1

B) 2

C) 3

D) 4

Answer & Explanation Answer: A) 1

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

Length of the sides of a triangle are a, b, c respectively. If $a^{2} + b^{2} + c^{2} = ab + bc + ca$ then the triangle is

A) isosceles	B) equilateral
C) scalene	D) right-angled

A) isosceles

B) equilateral

C) scalene

D) right-angled

Answer & Explanation Answer: B) equilateral

Explanation:

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

Length of the sides of a triangle are a, b, c respectively. If $a^{2} + b^{2} + c^{2} = ab + bc + ca$ then the triangle is

A) isosceles	B) equilateral
C) scalene	D) right-angled

A) isosceles

B) equilateral

C) scalene

D) right-angled

Answer & Explanation Answer: B) equilateral

Explanation:

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Filed Under: Volume and Surface Area
Exam Prep: Bank Exams

If x + √5 = 5 + √y, and x, y are positive integers, then the value of $\frac{\sqrt{x} + y}{x + \sqrt{y}}$

A) 1	B) 2
C) √5	D) 5

A) 1

B) 2

C) √5

D) 5

Answer & Explanation Answer: A) 1

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

The least value of $\tan^{2} x + \cot^{2} x$ is

A) 3	B) 2
C) 0	D) 1

A) 3

B) 2

C) 0

D) 1

Answer & Explanation Answer: B) 2

Explanation:

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Filed Under: Simplification
Exam Prep: Bank Exams

Let ΔABC and ΔABD be on the same base AB and between the same parallels AB and CD. Then the relation between areas of triangles ABC and ABD will be

A) 1	B) 2
C) 3	D) 4

A) 1

B) 2

C) 3

D) 4

Answer & Explanation Answer: D) 4

Explanation:

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Filed Under: Simplification
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Two circles touch each other externally. The distance between their centres is 7 cm. If the radius of one circle is 4 cm, then the radius of the other circle will be