Quantitative Aptitude - Arithmetic Ability Questions

Q:

What is the value of cot 11π/6?

A) -√3 B) -1
C) √3 D) -1/2
 
Answer & Explanation Answer: A) -√3

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Q:

X and Y are two alloys which are prepared by mixing zinc and aluminium in the ratio of 1 : 4 and 11 : 8 respectively. If equal quantities of alloys are melted to form a third alloy Z then what is the ratio of zinc and aluminium in alloy Z?

 

A) 32:47 B) 37:58
C) 37:95 D) 74:95
 
Answer & Explanation Answer: B) 37:58

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Q:

ABC is a triangle if sin (A+B2)=32 then the value of Sin c2 is

A) 12 B) 0
C) 1/2 D) 32
 
Answer & Explanation Answer: C) 1/2

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Q:

What is the simplified value of tan (θ/2) + cot (θ/2)?

A) 2 cosec θ B) 2 sec θ
C) sin θ D) cosec θ
 
Answer & Explanation Answer: A) 2 cosec θ

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Q:

The point equidistant from the vertices of a triangle is called its

A) incentre B) circumcentre
C) orthocentre D) centroid
 
Answer & Explanation Answer: B) circumcentre

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Q:

If 4x - 5y = -37 and 7x + y = -16, then x - y = ______

A) -8 B) 8
C) 2 D) -2
 
Answer & Explanation Answer: A) -8

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Q:

Find the least number which must be subtracted from 18265 to make it a perfect square

A) 30 B) 38
C) 40 D) 45
 
Answer & Explanation Answer: C) 40

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Filed Under: Problems on Numbers
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Q:

What is the value of √[(1 - sinA)/(1 + sinA)]?

A) cosA/(1 - sinA) B) cosecA/(1 + sinA)
C) cosA/(1 + sinA) D) cosecA/(1 - sinA)
 
Answer & Explanation Answer: C) cosA/(1 + sinA)

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Filed Under: Simplification
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