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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Simplify and find '?'

48?+32? = 320

A) 4 B) 8
C) 16 D) 32
 
Answer & Explanation Answer: C) 16

Explanation:

given

 48?+32?= 320 

=> 6?+4?=40

Now squaring on both sides

=> 36 x ? + 16 x ? + 48 x ? = 1600

=> 100 x ? = 1600

=>  ? = 16

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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

14 53764
Q:

The total age of A and B is 12 years more than the total age of B and C. C is how many years younger than A ?

A) 12 B) 13
C) 14 D) 15
 
Answer & Explanation Answer: A) 12

Explanation:

(A+B) - (B+C) = 12

 

A - C = 12.

 

C is younger than A by 12 years.

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Filed Under: Problems on Ages

294 53484
Q:

If the circumference of a circle is 22 cm, then what must be its area (in cm²)?

 

A) 77 B) 38.5
C) 31.5 D) 63
 
Answer & Explanation Answer: B) 38.5

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

1 53281
Q:

What number should replace the question mark?

125, 138, 164, ?, 255

A) 189 B) 197
C) 200 D) 203
 
Answer & Explanation Answer: D) 203

Explanation:

The given number series is 125,   138,   164,   ?,   255

 

125

 

125 + 13x1 = 138

 

138 + 13x2 = 164

 

164 + 13x3 = 203

 

203 + 13x4 = 255

 

 

 

Hence, the missing number in the series is 203.

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Filed Under: Odd Man Out
Exam Prep: GATE , CAT , Bank Exams , AIEEE
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5 53201
Q:

If the diameter of a circle is 28 cm, then what will be its circumference (in cm)?

 

A) 88 B) 176
C) 35 D) 70
 
Answer & Explanation Answer: A) 88

Explanation:
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Filed Under: Area
Exam Prep: Bank Exams

0 53127
Q:

What will come in place of the question mark(?) in the following question ?

56% of 870 + 82% of 180 = 32% of 90 + ?

A) 777 B) 666
C) 606 D) 789
 
Answer & Explanation Answer: C) 606

Explanation:

56% of 870 = 56x870/100 = 487.20

82% of 180 = 82x180/100 = 147.60

32% of 90 = 32x90/100

487.20 + 147.6 - 28.8  =  ?

? = 634.8  - 28.8

? = 606.

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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8 53032
Q:

What value will come in place of question mark (?) in the number - series given below  ? 

4, 30, ?, 1440, 7195, 71940

A) 145 B) 545
C) 650 D) 999
 
Answer & Explanation Answer: A) 145

Explanation:

4       30       ?     1440       7195      71940

 

Here the given series follows a pattern of

 

4

 

4 x 10 - 10 = 30

 

30 x 5 - 5  = 145

 

145 x 10 - 10 = 1440

 

1440 x 5 - 5 = 7195

 

7195 x 10 - 10 = 71940

 

Hence, the missing number is 145

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Filed Under: Odd Man Out
Exam Prep: GATE , CAT , Bank Exams , AIEEE
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9 53028
Q:

If books bought at prices ranging from Rs. 200 to Rs. 350 are sold at prices ranging from Rs. 300 to Rs. 425, what is the greatest possible profit that might be made in selling eight books ?

A) 600 B) 1200
C) 1800 D) none of these
 
Answer & Explanation Answer: C) 1800

Explanation:

Least Cost Price = Rs. (200 * 8) = Rs. 1600.

Greatest Selling Price = Rs. (425 * 8) = Rs. 3400.

Required profit = Rs. (3400 - 1600) = Rs. 1800.

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Filed Under: Profit and Loss

411 52912