Quantitative Aptitude - Arithmetic Ability Questions

Q:

If x2 + kx + k = 0 has repeated roots, then the value of k will satisfy :

 

 

A) k<0 or k>4 B) k=4 only
C) 0<k<4 D) k=4 or k=0
 
Answer & Explanation Answer: D) k=4 or k=0

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Q:

If p + 1p = 10, then the value of p4 + 1p4.

 

A) 52 B) 60
C) 62 D) 65
 
Answer & Explanation Answer: C) 62

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Q:

ΔXYZ is right angled at Y. If sinX = 4/5, then what is the value of cosZ ?

 

A) 3/4 B) 5/3
C) 4/5 D) 4/3
 
Answer & Explanation Answer: C) 4/5

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Q:

Find the factors of (x2  +  x -  42)

 

A) (x + 14)(x - 3) B) (x + 6)(x - 7)
C) (x - 6)(x + 7) D) (x - 14)(x + 3)
 
Answer & Explanation Answer: C) (x - 6)(x + 7)

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Q:

If x2 = 252 - 152, then find the value of x?

 

A) 40 B) 50
C) 20 D) 25
 
Answer & Explanation Answer: C) 20

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Q:

Find the volume (in cm³) of a cube of side 4.5 cm.

 

A) 55.467   B) 14.445  
C) 91.125   D) 26.465
 
Answer & Explanation Answer: C) 91.125  

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Q:

If (x + y)2 - xy = 0, then find the value of x3 - y3x - y.

 

A) 2 B) 3
C) 0 D) 5
 
Answer & Explanation Answer: C) 0

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Q:

What is the value of (2 + tan600) ?

 

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

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