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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

What is the value of (√2/3 - cosec60)?

 

A) (√6-6)/3√3 B) (2-2√3)/√3  
C) (1-√6)/√2   D) (4-√3)/2√3
 
Answer & Explanation Answer: A) (√6-6)/3√3

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 37417
Q:

Find the odd man out from the given series?

8, 18, 56, 232, 1165 

A) 18 B) 56
C) 232 D) 1165
 
Answer & Explanation Answer: B) 56

Explanation:

The given number series 8, 18, 56, 232, 1165 

8

8 x 2 + 2 = 18

18 x 3 + 3 = 57 (not 56)

57 x 4 + 4 = 232

232 x 5 + 5 = 1165

 

Hence, the odd man in the given series is 56.

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2 37332
Q:

Which of the following can be used to illustrate that not all prime numbers are odd? 

 

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

Explanation:

The only even numbers in the list are 2 and 4, but 4 is not a prime. So 2 can be used to illustrate the statement that all primes are not odd.

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Filed Under: Numbers
Exam Prep: GRE

6 37287
Q:

Three numbers are in the ratio  1 : 2 : 3  and their H.C.F is 12. The numbers are

A) 4, 8, 12 B) 5, 10, 15
C) 10, 20, 30 D) 12, 24, 36
 
Answer & Explanation Answer: D) 12, 24, 36

Explanation:

Let the required numbers be x, 2x, 3x.   Then, their H.C.F =x. so, x= 12

Therefore, The numbers are 12, 24, 36

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Filed Under: HCF and LCM

73 37212
Q:

If (x + 1x) = 2, then find the value of (x3 + 1x3) ÷ (x18 + 1x18)

 

A) 2/9 B) 5
C) 1 D) 1/9
 
Answer & Explanation Answer: C) 1

Explanation:
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0 37152
Q:

FInd the odd man out of the given series of numbers?

120, 36, 6, 2, 1, 1

A) 120 B) 36
C) 6 D) 2
 
Answer & Explanation Answer: B) 36

Explanation:

The given number series is 120, 36, 6, 2, 1, 1

120

120/5 = 24 (not 36)

24/4 = 6

6/3 = 2

2/2 = 1

1/1 = 1

 

Hence, the odd man in the given number series is 24.

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Filed Under: Odd Man Out
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1 37033
Q:

Find the odd number in the given number series?

14, 27, 105, 525, 4993

A) 27 B) 105
C) 525 D) 4993
 
Answer & Explanation Answer: C) 525

Explanation:

The given number series is 14, 27, 105, 525, 4993

14

14 x 2 - 1 = 27

27 x 4 - 3 = 105

105 x 6 - 5 = 625 (not 525)

625 x 8 - 7 = 4993

 

Hence, the odd man or number in the given number series is 525.

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Filed Under: Odd Man Out
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1 36997
Q:

A and B began business with Rs.3000 and Rs.4000 after 8 months, A withdraws Rs.1000 and B advances Rs.1000 more. At the end of the year, their profits amounted to Rs.630 find the share of A ?

A) Rs. 240 B) Rs. 75
C) Rs. 125 D) Rs. 354
 
Answer & Explanation Answer: A) Rs. 240

Explanation:

The ratio of A & B investments = (3x8 + 2x4):(4x8 + 5x4)

=> 8:13

=> 8/21 x 630 = 240.

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Filed Under: Partnership
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16 36966