Quantitative Aptitude - Arithmetic Ability Questions

Q:

The average marks of 45 students is shown as 65. It includes a wrong entry of 84 marks instead of 48 marks. The correct average is:

A) 65.8 marks B) 67.4 marks
C) 62.6 marks D) 64.2 marks
 
Answer & Explanation Answer: D) 64.2 marks

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

What is the average of all the one digit and two digit natural numbers?

A) 25 B) 40
C) 50 D) 99
 
Answer & Explanation Answer: C) 50

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Q:

If two marbles are picked at random, what is the probability that either both are red or both are green?

A) 5/7 B) 5/14
C) 1/7 D) 1/14
 
Answer & Explanation Answer: C) 1/7

Explanation:

Required probability = (10+3)91=1391=17

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Q:

In a triangle PQR, the side QR is extended to S. ∠QPR = 72° and ∠PRS = 110°, then the value of ∠PQR is

A) 38° B) 32°
C) 25° D) 29°
 
Answer & Explanation Answer: A) 38°

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Q:

In ΔPQR, S and T are points on side PQ and PR respectively. ST is parallel to QR. If lengths of PS, SQ and PR are 6 cm, 9 cm and 12.5 cm respectively, what is the length of TR?

A) 7.5 cm B) 5 cm
C) 10 cm D) 2.5 cm
 
Answer & Explanation Answer: A) 7.5 cm

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

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Q:

What is the value of 96+21624?

A) 8 B) 4
C) 5 D) 10
 
Answer & Explanation Answer: C) 5

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Filed Under: Simplification
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Q:

A certain amount of money is divided between A and B in the ratio of 5:6. If B gets Rs. 360, the amount is

A) 660 B) 560
C) 680 D) 580
 
Answer & Explanation Answer: A) 660

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

Let O be the orthocentre of the triangle ABC. If ∠BOC = 150°, Then ∠BAC is

A) 30° B) 60°
C) 90° D) 120°
 
Answer & Explanation Answer: A) 30°

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Filed Under: Area
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