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 Quantitative Aptitude - Arithmetic Ability Questions

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Q:

Assume 57 + 59 + 109 = 0, then find the value of 573 + 593 + 1093

 

A) 1099701 B) 1099601
C) 1099801 D) 1098701
 
Answer & Explanation Answer: A) 1099701

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 45427
Q:

Product of two co-prime numbers is 117. Their L.C.M  should be

A) 1 B) 117
C) Equal to their H.C.F D) cannot be calculated
 
Answer & Explanation Answer: B) 117

Explanation:

H.C.F of co-prime numbers is 1. So, L.C.M = 117/1 =117

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Filed Under: HCF and LCM

122 45427
Q:

In the following question, select the odd letter/letters from the given alternatives.

 

A)   RMHC     B)    XSNI      
C)   YTOJ       D)    ZVQL  
 
Answer & Explanation Answer: D)    ZVQL  

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

1 45343
Q:

Find the odd man out of the following number series?

22, 26, 42, 78, 142, 244

A) 244 B) 142
C) 78 D) 42
 
Answer & Explanation Answer: A) 244

Explanation:

The given number series 22, 26, 42, 78, 142, 244 follows a pattern that,

2222 + 22 = 22 + 4 = 2626 + 42 = 26 + 16 = 4242 + 62 = 42 + 36 = 7878 + 82 = 78 + 64 = 142142 + 102 = 142 + 100 = 242 

 

Hence, the odd one in the given number series is 244.

 

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Filed Under: Odd Man Out
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3 45323
Q:

If 2 tables and 3 chairs cost Rs, 3500 and 3 tables and 2 chairs cost Rs. 4000, then how much does a table cost ?

A) 500 B) 1000
C) 1500 D) 2000
 
Answer & Explanation Answer: B) 1000

Explanation:

Let the cost of a table and that of a chair be Rs. x and Rs, y respectively.

Then, 2x + 3y = 3500 ...(i)

and 3x + 2y = 4000 .....(ii)

solving (i) and (ii) we get x = 1000, y = 500 

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98 45299
Q:

ΔABC is right angled at B. If m∠C = 45 deg, then find the value of (cosecA - √3).

 

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

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0 45246
Q:

Cos2 90° + Cosec2 90° - Cot2 45° = ?

 

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

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0 45221
Q:

12 people at a party shake hands once with everyone else in the room.How many handshakes took place?

A) 72 B) 66
C) 76 D) 64
 
Answer & Explanation Answer: B) 66

Explanation:

There are 12 people, so this is our n value.

 

So, 12C21= 66

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Filed Under: Permutations and Combinations

90 45214