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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

In a lottery, there are 10 prizes and 25 blanks. A lottery is drawn at random. What is the probability of getting a prize?

A) 2/7 B) 5/7
C) 1/5 D) 1/2
 
Answer & Explanation Answer: A) 2/7

Explanation:

Total number of outcomes possible, n(S) = 10 + 25 = 35

 

Total number of prizes, n(E) = 10

 P(E)=n(E)n(S)=1035=27

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Filed Under: Probability

280 103168
Q:

1.123 + 11.23 + 112.3 = ?

 

A) 123.453 B) 124.653
C) 125.253 D) 123.953
 
Answer & Explanation Answer: B) 124.653

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

17 102640
Q:

SM@A#N2B4O&3C5P+D2

Using the above sequence find the characters that do NOT belong the group?

AO+, MB5, N32, $2P

 

A) N32 B) AO+
C) $2P D) MB5
 
Answer & Explanation Answer: C) $2P

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

0 102526
Q:

The value of 0.592 ÷ 0.8 = ?

 

A) 7.4 B) 0.74
C) 740 D) 0.074
 
Answer & Explanation Answer: B) 0.74

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 101575
Q:

Find the next number in the series 125, 80, 45, 20, ....

 

A) 5 B) 15
C) -5 D) 10
 
Answer & Explanation Answer: A) 5

Explanation:

The pattern is -45, -35, -25, -15

The next number = 20-15= 5

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Filed Under: Numbers
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk

44 101564
Q:

A, B and C enter into a partnership and their shares are in the ratio 1/2 : 1/3 : 1/4. After 2 months, A withdraws half of his capital and after 10 months, a profit of Rs. 378 is divided among them. What is B's share ?

A) 144 B) 169
C) 225 D) 339
 
Answer & Explanation Answer: A) 144

Explanation:

Ratio of initial investments = 1/2 : 1/3 : 1/4 = 6 : 4 : 3.

Let their initial investments be 6x, 2x and 3x respectively.

A : B : C = (6x * 2 + 3x * 10) : (4x * 12) : (3x * 12) = 42 : 48 : 36 = 7 : 8 : 6.

B's share =  Rs. (378 * 8/21) = Rs. 144.

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Filed Under: Partnership

148 101184
Q:

23-[24-25-(26-27-28¯)]=?

 

 

A) -2 B) -3
C) -1 D) 1
 
Answer & Explanation Answer: C) -1

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

18 100910
Q:

Which is the next number in the sequence:

1, 3, 6, 11, 20, 37, ??

A) 49 B) 56
C) 64 D) 70
 
Answer & Explanation Answer: D) 70

Explanation:

Here the given series is 1, 3, 6, 11, 20, 37, ??,

and the logic behind the series is

1 x 2 + 1 = 3

3 x 2 + 0 = 6

6 x 2 + (-1) = 11

11 x 2 + (-2) = 20

20 x 2 + (-3) = 37

37 x 2 + (-4) = 70

 

Hence, the next number in the given series is 70.

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

6 100477