Quantitative Aptitude - Arithmetic Ability Questions

Q:

If  cos2θ-sinθ = 1/4, then what is the value of sin θ?

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

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Q:

A solid cube is cut into 27 identical cubes. What is the percentage increase in the total surface area?

A) 150 B) 200
C) 300 D) 250
 
Answer & Explanation Answer: B) 200

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

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Q:

Two numbers are 10% and 20% lesser than a third number respectively. By how much percent is the second number should be enhanced to make it equal to the first number?

A) 345 B) 375
C) 415 D) 315
 
Answer & Explanation Answer: D) 315

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Filed Under: Time and Distance
Exam Prep: Bank Exams

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Q:

If the perimeter of a semi-circle is 36 cm, then find its radius (in cm).

A) 7 B) 14
C) 13 D) 26
 
Answer & Explanation Answer: A) 7

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Filed Under: Area
Exam Prep: Bank Exams

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Q:

What is the third proportional to 10 and 25?

A) 125 B) 150
C) 62.5 D) 225
 
Answer & Explanation Answer: C) 62.5

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

A bank offers 20% compound interest per half year. A customer deposits Rs 6000 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is

A) Rs 7680 B) Rs 3840
C) Rs 1920 D) Rs 960
 
Answer & Explanation Answer: B) Rs 3840

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Filed Under: Compound Interest
Exam Prep: AIEEE , Bank Exams

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Q:

What are the co­ordinates of the centroid of a triangle, whose vertices are A(­2,­5), B(4,­4) and C(7,3)?

A) (4,­-3) B) (-­1,0)
C) (-­3,­-3) D) (3,­-2)
 
Answer & Explanation Answer: D) (3,­-2)

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If a cone is divided into two parts by drawing a plane through the midpoints of its axis, then the ratio of the volume of the 2 parts of the cone is

A) 1 : 2 B) 1 : 4
C) 1 : 7 D) 1 : 8
 
Answer & Explanation Answer: C) 1 : 7

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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