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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Directions: What value should come in place of question mark (?) in the following question?

69÷3×0.85+24.5-13.8=?

A) 31.75  B) 30.25 
C) 28.95  D) 35.25 
 
Answer & Explanation Answer: B) 30.25 

Explanation:

= (69x85/3x100) + 10.7

= 30.25.

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Filed Under: Simplification
Exam Prep: AIEEE , Bank Exams , GATE

0 86475
Q:

In the following question, select the odd word from the given alternatives.

 

 

A) Rhombus B) Cylinder
C) Cone D) Sphere
 
Answer & Explanation Answer: A) Rhombus

Explanation:
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Filed Under: Odd Man Out
Exam Prep: Bank Exams

0 86337
Q:

In each of these questions, two equations (I) and (II) are given.

I. 2x2+19x+42 = 0II. 4y2+43y+30 = 0

A)  x > y B) x < y
C)  x ≥ y D) x ≤ y
 
Answer & Explanation Answer:

Explanation:

I. 2x2 + 19x + 42 = 0

2x2 + 12x + 7x + 42 = 0

2x (x+6) + 7(x +6) = 0

(2x+7) (x+6) = 0 x = -7/2, -6 I

I. 4y2 + 43y + 30 = 0

4y2 +40y + 3y + 30 = 0

4y(y + 10) + 3(y + 10) (4y + 3)(y + 10) = 0

y = -3/4, -10

So answer is no relation.

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2 86147
Q:

Simplify : 5x - 2x(x-1)

 

A) 3x-2 B) 3x+2
C) 7x+2x2 D) 7x-2x2
 
Answer & Explanation Answer: D) 7x-2x2

Explanation:
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Exam Prep: Bank Exams

0 85712
Q:

Find x.

693.5 - (47.23 - x) - 82.48 = 8.172.

A) -720.578 B) -555.618
C) -650.078 D) 831.382
 
Answer & Explanation Answer: B) -555.618

Explanation:
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Exam Prep: Bank Exams

5 85685
Q:

Find the missing number in the given number series?

514, 470, ?, 415, 404

A) 441 B) 437
C) 426 D) 420
 
Answer & Explanation Answer: B) 437

Explanation:

Given number series is 514   470   ?   415   404

 

 

 

Here the pattern it follows is

 

514

 

514 - 44 = 470

 

470 - 33 = 437

 

437 - 22 = 415

 

415 - 11 = 404

 

Hence, the missing number in the given number series is 437.

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Filed Under: Odd Man Out
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

4 85625
Q:

 A pupil's marks were wrongly entered as 83 instead of 63. Due to that the average marks for the class got increased by half. The number of pupils in the class is :

A) 45 B) 40
C) 39 D) 37
 
Answer & Explanation Answer: B) 40

Explanation:

Let there be x pupils in the class.

Total increase in marks = (x * 1/2) = x/2.

x/2 = (83 - 63) => x/2 = 20 => x = 40.

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201 85408
Q:

The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero ?

A) 0 B) -1
C) 1 D) none of these
 
Answer & Explanation Answer: A) 0

Explanation:

Average of 20 numbers = 0. 

 

Sum of 20 numbers = (0 * 20) = 0. 

 

It is quite possible that 19 of these numbers may be positive and if their sum is a, then 20th number is (- a).

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280 85310