Aptitude and Reasoning Questions

Q:

Find  two  natural  numbers  whose  sum  is  85 andtheleast common multiple is 102.

A) 30 & 55 B) 17 & 68
C) 35& 55 D) 51 & 34
 
Answer & Explanation Answer: D) 51 & 34

Explanation:

Let a + b = 85→b = 85 –a

LCM(a,b) =102→ab = 102

k→a(85 –a) = 102k, where k is a natural number.

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Filed Under: Numbers
Exam Prep: Bank Exams

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Q:

In a Δ ABC, DE || BC. D and E lie on AB and AC respectively. If AB = 7 cm and BD = 3cm, then find BC:DE

A) 2:2 B) 3:2
C) 3.5:2 D) 7:2
 
Answer & Explanation Answer: C) 3.5:2

Explanation:
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Q:

Product of digits of a 2-digit number is 72. If we add 9 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

A) 98 B) 89
C) 78 D) 87
 
Answer & Explanation Answer: B) 89

Explanation:
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Filed Under: Numbers
Exam Prep: AIEEE , Bank Exams , CAT

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Q:

If  a+1a2 = 3, then the value of a18+ a12+a6 + 1 is

A) 3 B) 1
C) 0 D) 2
 
Answer & Explanation Answer: C) 0

Explanation:
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Q:

Find the LCM of 12, 16, 20 and 24.

A) 180 B) 220
C) 240 D) 260
 
Answer & Explanation Answer: C) 240

Explanation:
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Filed Under: HCF and LCM
Exam Prep: Bank Exams

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Q:

The income of P, Q and R are in the ratio of 5 : 4 : 3 respectively and their expenses are in the ratio of 6 : 5 : 4 respectively. If P saves Rs 4000 out of an income of Rs 10000, then what will be the saving (in Rs) of Q?

 

A) 2500 B) 3000
C) 4500 D) 2000
 
Answer & Explanation Answer: B) 3000

Explanation:
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Filed Under: Ratios and Proportions
Exam Prep: Bank Exams

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Q:

What is that least digit that must be added to the product 5786 × 5784 to make it a perfect square?

 

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

Explanation:
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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

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Q:

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

A) 462 B) 297
C) 674 D) 891
 
Answer & Explanation Answer: C) 674

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

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