Quantitative Aptitude - Arithmetic Ability Questions

Q:

If cos 21° = x/y, then cosec 21° -­ cos 69° is equal to

A) x2yy2-x2 B) y2xy2-x2
C) y2xx2-y2 D) x2yx2-y2
 
Answer & Explanation Answer: A) x2yy2-x2

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Q:

If sin(A/2) = x, then the value of x is

A) √[(1 + cosA)/2] B) √[(1 -­ cosA)/2]
C) √[(1 -­ sinA)/2] D) √[(1 + sinA)/2]
 
Answer & Explanation Answer: B) √[(1 -­ cosA)/2]

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Q:

In an acute-angled triangle ABC is Sin(B+A+C)=32 and tan(C+A-B)=1, then C is equal to

A) 37.5° B) 67.5°
C) 52.5° D) 72.5°
 
Answer & Explanation Answer: C) 52.5°

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Q:

What is the equation of a line which has 3 as x-intercept and -5 as y-intercept?

A) 3x - 5y = 15 B) 5x - 3y = 15
C) 5x + 3y = 15 D) 3x + 5y = 15
 
Answer & Explanation Answer: B) 5x - 3y = 15

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Q:

If cos 45° - ­ sec 30° = x, then value of x is

A) (1+√2)/2 B) (2√2­√3)/2
C) (√3­2√2)/√6 D) 4/√3
 
Answer & Explanation Answer: C) (√3­2√2)/√6

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Q:

Point P (-2, 5) is the midpoint of segment AB. Co-ordinates of A are (-5, y) and B are (x, 3). What is the value of x?

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

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Q:

If 11+11+11+1x = 58, then what is the value of x?

A) 2 B) 3
C) 1 D) 4
 
Answer & Explanation Answer: A) 2

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Q:

Rs. 3105 is due to be divided among K, L and M in the proportion of 2/3 : 3/4 : 1/2 respectively. How much will L get?

A) Rs. 1080 B) Rs. 810
C) Rs. 1215 D) Rs. 970
 
Answer & Explanation Answer: C) Rs. 1215

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