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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Find the odd one out of the following number series?

56, 64, 48, 90, 16, 144

 

A) 48 B) 64
C) 90 D) 16
 
Answer & Explanation Answer: C) 90

Explanation:

The given number series follows a pattern that,

56

56 + 8 = 64

64 - 16 = 48

48 + 32 = 80 (Not equal to 90)

80 - 64 = 16

16 + 128 = 144 

 

Hence, the odd number in the given number series is 90.

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Filed Under: Odd Man Out
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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4 51632
Q:

A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is:

A) 650 B) 690
C) 698 D) 700
 
Answer & Explanation Answer: C) 698

Explanation:

S.I. for 1 year =  Rs. (854 - 815) = Rs. 39.

S.I. for 3 years = Rs.(39 x 3) = Rs. 117.

Principal = Rs. (815 - 117) = Rs. 698

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Filed Under: Simple Interest
Exam Prep: GRE

257 51613
Q:

Find the odd one in the given series ?

5-20-25, 10-40-50, 4-15-24, 25-100-125

A) 4-15-24 B) 5-20-25
C) 10-40-50 D) 25-100-125
 
Answer & Explanation Answer: A) 4-15-24

Explanation:

In each term second two numbers are multiples of the first number. But in 4-15-24 15 is not multiple of 4.

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Filed Under: Odd Man Out
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Job Role: Bank Clerk , Bank PO

5 51578
Q:

What is the probability of getting a sum 9 from two throws of a dice?

A) 1/2 B) 3/4
C) 1/9 D) 2/9
 
Answer & Explanation Answer: C) 1/9

Explanation:

In two throws of a die, n(S) = (6 x 6) = 36.

Let E = event of getting a sum ={(3, 6), (4, 5), (5, 4), (6, 3)}.

P(E) =n(E)/n(S)=4/36=1/9.

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Filed Under: Probability

80 51532
Q:

Aman started a business investing Rs. 70,000. Rakhi  joined him after six months with an amount of Rs. 1,05,000 and Sagar joined them with Rs. 1.4 lakhs after another six months. The amount of profit earned should be distributed in what ratio among Aman, Rakhi and Sagar respectively, 3 years after Aman started the business ?

A) 11 : 13 : 15 B) 11 : 13 : 17
C) 12 : 17 : 18 D) 12 : 15 :16
 
Answer & Explanation Answer: D) 12 : 15 :16

Explanation:

Aman : Rakhi : Sagar = (70000 x 36) : (105000 x 30) : (140000 x 24) = 12 : 15 : 16.

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Filed Under: Partnership

29 51220
Q:

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

(A) 4-16 (B) 8-24 (C) 14-26 (D) 16-36

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

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

2 51108
Q:

{8 - (28 - 53)} / {-4 x 5 - (-9)} = ?

 

A) 11 B) -3
C) 3 D) -11
 
Answer & Explanation Answer: B) -3

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

13 51063
Q:

Seats for Mathematics, Physics and Biology in a school are in the ratio 5:7:8. There is a proposal to increase these seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats ?

A) 1:2:3 B) 2:3:4
C) 3:4:5 D) 4:5:6
 
Answer & Explanation Answer: B) 2:3:4

Explanation:

Originally, let the number of seats for Mathematics, Physics and Biology be 5x, 7x and 8x respectively.
Number of increased seats are (140% of 5x), (150% of 7x) and (175% of 8x).
⇒ [(140/100) × 5x],[(150/100) × 7x] and [(175/100) × 8x]
⇒ 7x, 21x/2 and 14x.

⇒ The required ratio =7x : 21x/2 : 14x
⇒ 14x : 21x : 28x
⇒ 2 : 3 : 4

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Filed Under: Ratios and Proportions

162 51048