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Q:

There are three rooms in a Hotel: one single, one double and one for four persons. How many ways are there to house seven persons in these rooms ?

A) 105 B) 7! x 6!
C) 7!/5! D) 420
 
Answer & Explanation Answer: A) 105

Explanation:

Choose 1 person for the single room & from the remaining choose 2 for the double room & from the remaining choose 4 people for the four person room, 

 Then, 7C1 x 6C2 x 4C4 

= 7 x 15 x 1 = 105

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Filed Under: Permutations and Combinations
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

14 15750
Q:

In the following question, select the missing number from the given series.

42, 47, 52, 57, ?, 67

 

A) 60 B) 62
C) 65 D) 63
 
Answer & Explanation Answer: B) 62

Explanation:
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Filed Under: Number Series
Exam Prep: Bank Exams

1 15744
Q:

A number X is mistakenly divided by 10 instead of being multiplied by 10. What is the percentage error in the result?

A) -99% B) +99%
C) -100% D) +100%
 
Answer & Explanation Answer: A) -99%

Explanation:

By mistake = x/10 

 

Actual value = x * 10 

 

% Change = 10x-x1010x×100 = 99100×100  = 99% (negative)

 

Since actual value is greater than the wrong value.

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Filed Under: Percentage
Exam Prep: CAT , Bank Exams , AIEEE
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15 15742
Q:

In the following question, select the missing number from the given series.

 

18, 37, 76, 155, 314, ?

 

A) 633   B) 628  
C) 537   D) 528
 
Answer & Explanation Answer: A) 633  

Explanation:
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Filed Under: Number Series
Exam Prep: Bank Exams

3 15733
Q:

Which of the following is an Autotroph?

A) Fish B) Algae
C) Butterfly D) Mushroom
 
Answer & Explanation Answer: B) Algae

Explanation:

Here from the above options, Algae is an Autotroph.

Autotrophs : 

An Autotroph is also called as Producer, is an organism that produces complex organic compounds from simple substances present in its surroundings, generally using energy from light or inorganic chemical reactions.

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Filed Under: Biology
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank PO , IT Trainer

78 15722
Q:

Select the correct set that represents the following Venn diagram.

 

 

 

 

A) Office boys, government employees, educated person B) Males, fathers, doctors
C) Cat, toys, girl D) Doctors, human beings, cows
 
Answer & Explanation Answer: A) Office boys, government employees, educated person

Explanation:
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Filed Under: Logical Venn Diagram
Exam Prep: Bank Exams

2 15720
Q:

The main job of a CPU is to 

A) carry out program instructions B) store data/ information for future use
C) Process data and information D) both (a) and (c)
 
Answer & Explanation Answer: D) both (a) and (c)

Explanation:
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Filed Under: Computer
Exam Prep: Bank Exams
Job Role: Bank PO

50 15716
Q:

A man whose speed is 4.5 kmph in still water rows to a certain upstream point and back to the starting point in a river which flows at 1.5 kmph, find his average speed for the total journey ?

A) 5 kmph B) 7 kmph
C) 3 kmph D) 4 kmph
 
Answer & Explanation Answer: D) 4 kmph

Explanation:

Speed of Man = 4.5 kmph
Speed of stream = 1.5 kmph
Speed in DownStream = 6 kmph
Speed in UpStream = 3 kmph
Average Speed = (2 x 6 x 3)/9 = 4 kmph.

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Filed Under: Time and Distance
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

16 15714