Quantitative Aptitude - Arithmetic Ability Questions

Q:

If 3a+4b3c+4d = 3a-4b3c-4d, then 

A) ab = cd B) ad = bc
C) ac = bd D) a = b = c ≠ d
 
Answer & Explanation Answer: B) ad = bc

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

If x2  4x + 1 = 0, then what is the value of x9 + x7  194x5  194x3?

A) 4 B) – 4
C) 1 D) – 1
 
Answer & Explanation Answer: B) – 4

Explanation:
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Exam Prep: Bank Exams

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Q:

What is the value of sec2θ + 1sec2θ - 1 x 12cotθ - tanθ ?

A) 0 B) 1
C) cosec θ D) sec θ
 
Answer & Explanation Answer: B) 1

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Q:

ΔXYZ is right angled at Y. If cosX = 3/5, then what is the value of cosecZ ?

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

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Q:

The volume of a cube is 166.375 cm3. Find its side (in cm).

A) 6.5 B) 4.5
C) 7.5 D) 5.5
 
Answer & Explanation Answer: D) 5.5

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

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Q:

If compound interest received on a certain amount in the 3rd year is Rs. 1,240, what will be the compound interest (in Rs) for the 4th year on the same amount at 9% rate of interest?

A) 1245.6 B) 1521.6
C) 1351.6 D) 1220.6
 
Answer & Explanation Answer: C) 1351.6

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Filed Under: Compound Interest
Exam Prep: Bank Exams

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Q:

If the shopkeeper sells an item at Rs 450 which is marked as Rs 600, then what is the discount he is offering?

A) 33.33 percent B) 25 percent
C) 20 percent D) 30 percent
 
Answer & Explanation Answer: B) 25 percent

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Filed Under: Percentage
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Q:

Given that the polynomial (x2+ ax+ b) leaves that same remainder when by (x –1) or (x + 1) What are the values of a and b respectively?

A) 4 and 0 B) 0 and 3
C) 3 and 0 D)  0 and any interger
 
Answer & Explanation Answer: D)  0 and any interger

Explanation:

Since x^2+ ax + b when divided by x-1 or x+1 leaves the same remainder

So on putting x=1 and x=-1 we get the same value

1+a+b = 1-a+b

2a=0

a=0

here b can take any value as it will always get cancelled out

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Filed Under: Numbers
Exam Prep: Bank Exams

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