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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

In the following question, four number pairs are given. The number on left side of (–) is related to the number of the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

A) 9 – 81 B) 8 – 64
C) 6 – 36 D) 7 – 47
 
Answer & Explanation Answer: D) 7 – 47

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

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Q:

A boat travels 24 km upstream in 6 h and 20 km downstream in 4 h. then, the speed of a boat in still water and the speed of current are respectively

A) 4.5 km/h and 3 km/h B) 4.5 km/h and 0.5 km/h
C) 4 km/h and 2 km/h 5 km/h and 2 km/h D) 5 km/h and 2 km/h
 
Answer & Explanation Answer: B) 4.5 km/h and 0.5 km/h

Explanation:

Distance travelled by boat in upstream=24km

Time taken = 6 h

Speed of the boat in upstream = 24/6 = 4 km/h

And distance travelled by boat in downstream = 20 km

Time taken = 4h Speed of the boat in downstream = 20/4 km/h = 5 km/h

Now, speed of the boat in still water = 1/2 [ speed of the boat in upstream + speed of the boat in downstream] =1/2 [4 + 5] = 1/2 × 9 = 4.5 km/h

And speed of the current = 1⁄2 [speed of the boat in downstream – speed of the boat in upstream] = 1/2 [5 – 4] = 1/2 × 1 = 0.5 km/h

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Filed Under: Boats and Streams
Exam Prep: Bank Exams

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Q:

Lokesh starts a business with Rs 240000. After 3 months Vishal joins him with Rs 210000. At the end of the year what will be the ratio of their profit?

A) 32 : 21 B) 16 : 13
C) 8 : 5 D) 45 : 39
 
Answer & Explanation Answer: A) 32 : 21

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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams , GATE
Job Role: Bank Clerk , Bank PO

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Q:

AB is a diameter of a circle. C is a point on the tangent drawn at A . If AB = 8 cm and AC = 6 cm , then the length of BC is

A) 10 cm B) 14 cm
C) 5 cm D) 7 cm
 
Answer & Explanation Answer: A) 10 cm

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

To cover a distance of 90 km in 2.5 hours what should be the average speed of the car in meters/second?

A) 10 B) 20
C) 30 D) 40
 
Answer & Explanation Answer: A) 10

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Filed Under: Time and Distance
Exam Prep: Bank Exams

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Q:

If a merchant offers a discount of 25% on the list price, then he makes a loss of 5%. What % profit or % loss will he make if he sells at a discount of 10% of the list price?

A) 5.5 percent loss B) 14 percent profit
C) 50 percent profit D) 26 percent loss
 
Answer & Explanation Answer: B) 14 percent profit

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

What is the average of all natural numbers from 21 to 39?

A) 30 B) 31
C) 29 D) 28
 
Answer & Explanation Answer: A) 30

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Filed Under: Average
Exam Prep: Bank Exams

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Q:

θ is a positive acute angle and sinθ ­ cosθ = 0, then the value of secθ + cosecθ is

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

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Filed Under: Simplification
Exam Prep: Bank Exams

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