Quantitative Aptitude - Arithmetic Ability Questions

Q:

The measures of the four angles of a quadrilateral are in the ratio 1:2:3:4. What is the measure of the biggest angle?

A) 36° B) 144°
C) 72° D) 108°
 
Answer & Explanation Answer: B) 144°

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Q:

3 numbers whose average is 112, the first number is 1/6th the sum of other 2. What is the first number?

A) 45 B) 30
C) 15 D) 48
 
Answer & Explanation Answer: D) 48

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Q:

If 2x2+2y2=4a the find the value of 2ax2-a+2ay2-a

A) 0 B) 1
C) a D) 2a
 
Answer & Explanation Answer: A) 0

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Q:

A dealer is selling an article at a discount of 5% on the Marked price. If the Marked price is 12% above the cost price and the article was sold for Rs. 532 then the cost price is (in Rs.)

A) 500 B) 525
C) 505 D) 520
 
Answer & Explanation Answer: A) 500

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Q:

A root of equation ax2 + bx + c = 0 (where a, b and c are rational numbers) is 5 + 3√3. What is the value of (a2 + b2 + c2)/(a + b + c)?

A) 35/3 B) 37/3
C) – 105/11 D) – 105/13
 
Answer & Explanation Answer: C) – 105/11

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Filed Under: Simplification
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Q:

Some one rupee, 50 paisa and 25 paisa coins make up rupees 93.75 and their numbers are in the proportion of 3 : 4 : 5. Find the number of each type of coins?

A) 42, 56, 70 B) 45, 60, 75
C) 40, 70, 75 D) 46, 58, 75
 
Answer & Explanation Answer: B) 45, 60, 75

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Filed Under: Ratios and Proportions
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Q:

What is the value of (cosec30 - 1/√3)?

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

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Q:

A photographer allows a discount of 10% on the advertised price of a camera. The price (in Rs) that must be marked on the camera, which cost him Rs 600, to make a profit of 20% would be

A) 650 B) 800
C) 700 D) 850
 
Answer & Explanation Answer: B) 800

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Filed Under: Percentage
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