Quantitative Aptitude - Arithmetic Ability Questions

Q:

If the 1st and the 3rd term of an arithmetic progression are -10 and -4, what is the 12th term?

A) 26 B) 20
C) 17 D) 23
 
Answer & Explanation Answer: D) 23

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Filed Under: Numbers
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Q:

If 12x2 - ax + 7 = ax2 + 9x + 3 has only one (repeated) solution, then the positive integral solution of a is

 

A) 2 B) 4
C) 3 D) 5
 
Answer & Explanation Answer: C) 3

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Filed Under: Simplification
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Q:

For real a, b and c if a2 + b2 + c2 = ab + bc + ca, then find the value of a+b+c2.

A) 9a2 B) 81a2
C) 27a2 D) 243a2
 
Answer & Explanation Answer: A) 9a2

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Q:

In the following question, four groups of three numbers are given. In each group the second and third number are related to the first number by a Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

 

A) (14, 29, 30) B) (17, 35, 36)  
C) (15, 32, 33)   D) (21, 43, 44)
 
Answer & Explanation Answer: C) (15, 32, 33)  

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Filed Under: Odd Man Out
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Q:

If the length of the shadow of a vertical pole on the horizontal ground is √3 times its height, then the angle of elevation

A) 40 deg B) 50 deg
C) 30 deg D) 45 deg
 
Answer & Explanation Answer: C) 30 deg

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Filed Under: Height and Distance
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Q:

The length of two parallel sides of a trapezium are 18 m and 24 m. If its height is 12 m, then what is the area (in sq.m) of the trapezium?

A) 126 B) 252
C) 504 D) 1024
 
Answer & Explanation Answer: B) 252

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Filed Under: Volume and Surface Area
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Q:

The square root of which of the following numbers is irrational?

A) 3969 B) 5625
C) 6560 D) 1764
 
Answer & Explanation Answer: C) 6560

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Filed Under: Problems on Numbers
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Q:

Average age of 5 students of a school is 14 years. The average age of students and their Mathematics and science teachers is 30 years. If the age of science teacher is 6 years more than the age of Mathematics teacher, then what is the age (in years) of Mathematics teacher?

 

A) 67 B) 68
C) 56 D) 74
 
Answer & Explanation Answer: A) 67

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Filed Under: Problems on Ages
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