Aptitude and Reasoning Questions

Q:

The number of ways that 7 teachers and 6 students can sit around a table so that no two students are together is 

A) 7! x 7! B) 7! x 6!
C) 6! x 6! D) 7! x 5!
 
Answer & Explanation Answer: B) 7! x 6!

Explanation:

The students should sit in between two teachers. There are 7 gaps in between teachers when they sit in a roundtable. This can be done in 7P6ways. 7 teachers can sit in (7-1)! ways.

 

 Required no.of ways is = 7P6.6! = 7!.6!

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Filed Under: Permutations and Combinations
Exam Prep: AIEEE , Bank Exams , CAT
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10 6251
Q:

If the discount on Rs. 498 at 5% simple interest is Rs.18, when is the sum due?

A) 8 months B) 11 months
C) 10 months D) 9 months
 
Answer & Explanation Answer: D) 9 months

Explanation:

F = Rs. 498

TD = Rs. 18

PW = F - TD = 498 - 18 = Rs. 480

R = 5%

 

TD=PW×TR100

 

18=480×T×5100

 

=> T = 3/4 years = 9 months

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Filed Under: Banker's Discount

4 6251
Q:

Consider the given argument and decide which of the given assumptions is (are) implicit.

 

Argument :

 

A top television company announced up to 50% discount on their new launch of LED TV.

 

Assumptions :

 

1. The sales of the LED TV may increase.

2. The company will become the top seller of the LED TV.

 

A) Both 1 and 2 are implicit B) Only assumption 1 is implicit
C) Neither 1 nor 2 is implicit D) Only assumption 2 is implicit
 
Answer & Explanation Answer: B) Only assumption 1 is implicit

Explanation:
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Filed Under: Statement and Assumptions
Exam Prep: Bank Exams

0 6247
Q:

When the price of rice decrease by 10%, a girl could buy 1 kg more for Rs. 270. Then, the original price of the rice per kg is

A) Rs. 36 B) Rs. 30
C) Rs. 28 D) Rs. 40
 
Answer & Explanation Answer: B) Rs. 30

Explanation:

From the given data,

When the price of rice is decreased by 10%, the value of Rs. 270 would become

270 x 100/90 = 300

Now, the value 270 becomes 300

And given, the girl could buy 1 kg extra for that value

Change in value = 300 - 270 = Rs. 30

 

Therefore, 1 kg extra rice she can get for Rs. 30

 

=> The original price of rice = Rs. 30/kg.

 

As she gets only 9 kgs for Rs. 270 before 10% discount, now after discount she gets 10 kgs instead of 9 kgs for Rs. 270.  

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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27 6243
Q:

Whether the last number 240 in the following series is according to the remaining numbers pattern ?

2, 4, 12, 48, 240

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

The given series follows,


2


2 x 2 = 4


4 x 3 = 12


12 x 4 = 48


48 x 5 = 240.

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Subject: Number Series
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

24 6237
Q:

Choose the word which is least like the others word in a group?

A) Zinc B) Aluminium
C) Mercury D) Copper
 
Answer & Explanation Answer: C) Mercury

Explanation:

Mercury is the only liquid metal in the group.

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Filed Under: Classification

44 6236
Q:

Which of the following figures shown below, when folded along the dotted lines, will form a pyramid shaped box with a rectangular base?

A) a B) b
C) c D) d
 
Answer & Explanation Answer: D) d

Explanation:
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Filed Under: Image Analysis

12 6228
Q:

A Conical tent was erected by the army at a base camp with height 3 m and base diameter 10 m. If every person requires 3.92 cu.m air, then how many persons can be seated in that tent approximately?

A) 20 B) 19
C) 17 D) 22
 
Answer & Explanation Answer: A) 20

Explanation:

Given height of the conical tent = 3 m

Diameter = 10 => Radius = D/2 = 10/2 = 5 m 

Now, as the tent is in the conical form

Volume of the conical tent = πr2h3 

=> (22 x 5 x 5 x 3) / (7 x 3) 

= 22 x 25/7 

= 78.54 cu.m 

Given each person requires 3.92 cu.m of air 

=> Number of persons can be seated in the tent = 78.54/3.92 = 20.03 =~ 20

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Filed Under: Volume and Surface Area
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk

17 6220