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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

The minimum value of LCM of given numbers is ........... the product of all the given numbers.

A) always greater than B) always less than
C) always equal to D) None
 
Answer & Explanation Answer: D) None

Explanation:
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Filed Under: HCF and LCM
Exam Prep: Bank Exams

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Q:

A wholesaler sells a watch to a retailer at a profit of 8% and the retailer sells it to a customer at a profit of 12%. If the customer pays Rs. 8,448 what had it cost (approximately) to the wholesaler (in Rs)?

A) 6984 B) 6082
C) 7120 D) 7022
 
Answer & Explanation Answer: A) 6984

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Filed Under: Profit and Loss
Exam Prep: Bank Exams

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Q:

Three years from now Dharitri's age will be eight years less than twice Eunice's age. The sum of their present ages is 61 years. What is Dharitri's present age?

A) 41 yrs B) 39 yrs
C) 36 yrs D) 43 yrs
 
Answer & Explanation Answer: B) 39 yrs

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Filed Under: Problems on Ages
Exam Prep: Bank Exams

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Q:

Find the square root of 15625.

A) 125 B) 145
C) 150 D) 135
 
Answer & Explanation Answer: A) 125

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Filed Under: Numbers

2 2164
Q:

Choose the odd one out from among the given figures.

A) B B) C
C) D D) A
 
Answer & Explanation Answer: C) D

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Filed Under: Odd Man Out

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Q:

3x2-14x+16=05y2-16y+12=0

A) x > y B) x < y
C) x=y or relation cannot be established between x and y D) x ≥ y
 
Answer & Explanation Answer: C) x=y or relation cannot be established between x and y

Explanation:

3x2 – 14x + 16=0

3x2 –6x – 8x + 16=0

3x (x-2) – 8 (x-2)

(3x-8) (x-2)=0

x=8/3 or 2

5y2 – 16y + 12=0

5y2 – 10y – 6y + 12=0

5y (y-2) – 6 (y-2)=0

(5y-6) (y-2)=0

y=6/5 or 2

Can't be determined.

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Filed Under: Simplification

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Q:

If length of each side of a rhombus PQRS is 8 cm and ∠PQR = 120°, then what is the length (in cm) of QS?

A) 4√5 B) 6
C) 8 D) 12
 
Answer & Explanation Answer: C) 8

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Filed Under: Area

10 2159
Q:

3/8 as a decimal

A) 1.375 B) 2.375
C) 0.375 D) 3.75
 
Answer & Explanation Answer: C) 0.375

Explanation:

Expressing 3/8 as a decimal fraction:

We can convert 3/8 into a decimal fraction by just dividing 3 by 8 or making 3 into 8 parts.

Then, it is 3/8 = 0.375 as a decimal fraction.

 

Other Method::

3/8 as a Decimal :

In this we should convert the denominator into 10, 100, 1000, 10000, 100000,... to make it simple.

Now to make 8 into 1000, we multiply numerator and denominator with 125

 

=> (3 x 125)/(8 x 125) = 375/1000 = 0.375.

 

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Filed Under: Decimal Fractions
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