Quantitative Aptitude - Arithmetic Ability Questions

Q:

Find out the odd word/letters/number/number pair from the given alternatives.

A) 512 B) 216
C) 343 D) 719
 
Answer & Explanation Answer: D) 719

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

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Q:

Karteek is twice as good a foreman as Raju and together they finish a piece of work in 20 days. In how many days will Raju alone finish the work?

A) 40 B) 60
C) 80 D) 50
 
Answer & Explanation Answer: B) 60

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Filed Under: Time and Work
Exam Prep: AIEEE , Bank Exams

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Q:

Three solid spheres have their radii r1, r2 and r3. The spheres are melted to form a solid sphere of bigger radius. Then the radius of the new sphere is

A) r1+r2+r3 B) r12+r22+r3212
C) r13+r23+r3313 D) r14+r24+r3414
 
Answer & Explanation Answer: C) r13+r23+r3313

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

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Q:

Three consecutive integers form the lengths of a right-angled triangle. How many sets of such three consecutive integers is/are possible?

A) Only one B) Only two
C) Only three D) Infinitely many
 
Answer & Explanation Answer: A) Only one

Explanation:

let n-1, n, n+1 be 3 consecutive integers

So

(n+1)^2= n^2+ (n-1)^2

(n+1)^2-(n-1)^2= n^2

4n = n^2

So n = 0 or n = 4

n can’t be 0 as n-1 will be negative then

So 3,4 and 5 is the only triplet formed.

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

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Q:

A and B together can do a piece of work in 12 days while A alone can do the same work in 30 days. B alone can do it in

A) 18 days B) 20 days
C) 15 days D) 22 days
 
Answer & Explanation Answer: B) 20 days

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Q:

An hour-long test has 60 problems. If a student completes 30 problems in 25 minutes, then the required seconds he has taken on average for computing each of the remaining problems is

A) 70 seconds B) 50 seconds
C) 40 seconds D) 30 seconds
 
Answer & Explanation Answer: A) 70 seconds

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

Four pairs of words are given. Find the odd one out.

A) Rhombus : Four-sided polygon B) Nonagon : Seven-sided polygon
C) Octagon : Eight-sided polygon D) Hexagon : Six-sided polygon
 
Answer & Explanation Answer: B) Nonagon : Seven-sided polygon

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Filed Under: Odd Man Out
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Q:

Two equal circles intersect each other at point A and B, whose centers are O and O’. OO’ = 24 mm and AB = 10 mm, then find the area (in sq. mm) of the circle.

 

A) 530.66 B) 520.66
C) 510.33 D) 500.33
 
Answer & Explanation Answer: A) 530.66

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Filed Under: Area
Exam Prep: Bank Exams

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