Aptitude and Reasoning Questions

Q:

39 persons can repair a road in 12 days, working 5 hours a day. In how many days will 30 persons, working 6 hours a day, complete the work?

A) 10 B) 13
C) 14 D) 15
 
Answer & Explanation Answer: B) 13

Explanation:

Let the required number of days be x.

Less persons, More days (Indirect Proportion)

More working hours per day, Less days (Indirect Proportion)

Persons30:39Working hours/day6:5 12:x

 

=> 30 * 6 * x = 39 * 5 * 12 

 

=> x= 13

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Filed Under: Chain Rule

57 57357
Q:

1, 2, 3, 10, ?, 9802

A) 99 B) 199
C) 299 D) 999
 
Answer & Explanation Answer: A) 99

Explanation:

2 = 12 + 13 = 22 - 110 = 32 + 1Now 102 - 1 = 999802 = 992 + 1

 

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Filed Under: Number Series
Exam Prep: AIEEE , Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

841 57338
Q:

The greatest number which on dividing 1657 and 2037 leaves remainders 6 and 5 respectively, is:

A) 123 B) 127
C) 235 D) 305
 
Answer & Explanation Answer: B) 127

Explanation:

Required number = H.C.F. of (1657 - 6) and (2037 - 5)

= H.C.F. of 1651 and 2032 = 127.

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Filed Under: HCF and LCM

251 57283
Q:

On what dates of April, 2001 did Wednesday fall?

A) 2nd,9th,16th,23rd B) 4th,11th,18th,25th
C) 12th,18th,27th,6th D) 1st,8th,15th,22nd
 
Answer & Explanation Answer: B) 4th,11th,18th,25th

Explanation:

We shall find the day on 1st April, 2001.

1st April, 2001 = (2000 years + Period from 1.1.2001 to 1.4.2001)

Odd days in 1600 years = 0

Odd days in 400 years = 0

Jan. Feb. March April

(31 + 28 + 31 + 1) = 91 days 0 odd days.

Total number of odd days = (0 + 0 + 0) = 0

On 1st April, 2001 it was Sunday.

In April, 2001 Wednesday falls on 4th, 11th, 18th and 25th.

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Filed Under: Calendar

254 57235
Q:

Simplify: (157 x 157 + 143 x 143)

 

A) 45098 B) 46098
C) 90196   D) 91196
 
Answer & Explanation Answer: A) 45098

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams , CAT

0 57231
Q:

At what time between 7 and 8 o'clock will the hands of a clock be in the same straight line but,not together?

A) (5 + 5/11 )min past 7 B) (6 + 5/11) min past 7
C) 7 D) 8
 
Answer & Explanation Answer: A) (5 + 5/11 )min past 7

Explanation:

When the hands of the clock are in the same straight line but not together, they are 30 minute spaces apart.
At 7 o'clock, they are 25 min. spaces apart.
Minute hand will have to gain only 5 min. spaces.
55 min. spaces are gained in 60 min.

 

5 min spaces are gained in 6055*5 min  = 5511min 

 

so, Required time = 5511 min  past 7

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Filed Under: Clocks
Exam Prep: Bank Exams
Job Role: Bank PO

90 57222
Q:

Select the related number from the given alternatives.

2.25 : 13/4 :: 3.75 : ?

A) 17/4 B) 19/4
C) 15/4 D) 11/4
 
Answer & Explanation Answer: B) 19/4

Explanation:
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Filed Under: Analogy
Exam Prep: Bank Exams

1 57182
Q:

Correct expression of 0.12636¯ = ?

 

A) 139/1100 B) 126 361000
C) 1392200 D) 1263610000
 
Answer & Explanation Answer: A) 139/1100

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

5 57168