Aptitude and Reasoning Questions

Q:

The last two digits of 2151415?

A) 81 B) 61
C) 91 D) 51
 
Answer & Explanation Answer: D) 51

Explanation:

Unit digit of this expression is always 1 as the base ends with 1. 

For the tenth place digit we need to multiply the digit in the tenth place of the base and unit digit of the power and take its unit digit.

i.e, tenth place digit in 2151 is 5 and

tenth place digit in power 415 is 1

And the units digit in the product of 5 x 1 = 5

 

Therefore, last two digits of 2151415 is 51.

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Filed Under: Mathematical Operations
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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23 5627
Q:

How many pairs of letters are there in the word 'PRESENTMENT which have as many letters between them in the word as in the alphabet ?     

A) Nil B) Three
C) Two D) One
 
Answer & Explanation Answer: C) Two

Explanation:

Letters in the word                     Letters in the alphabet

 

PRES-     -

                                PQRS-     -

 

RESEN-        -                             RQPON-        -

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Filed Under: Alphabet Test

3 5627
Q:

The average of ages of threee persons is 60 years . Those ages are in the proportion of 1:2:3. what is the age of the youngest one among them?

Answer

Suppose the ages of three persons are x, 2x, 3x years respectively 





Hence, age of youngest person = x = 30 years.

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Subject: Problems on Ages

3 5623
Q:

In the following question, various terms of an alphanumerical series are given with one or more terms missing as shown by (?). Choose the missing terms out of the given alternatives. 3F, 6G, 11I, 18L, ?

A) 27Q B) 27P
C) 25N D) 21O
 
Answer & Explanation Answer: B) 27P

Explanation:

The letters move 1, 2, 3, ... steps forward.
The numbers increase by + 3, + 5, + 7, + 9....

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Filed Under: Number Series

9 5622
Q:

A began a business with Rs. 85000. He was joined afterwards by B with Rs. 42,500. For how much perod does B join, if the profits at the end of the year are divided in the ratio of 3:1 ?

A) 8 months B) 6 months
C) 7 months D) 9 months
 
Answer & Explanation Answer: A) 8 months

Explanation:

Suppose B joined for x months.

Given profit is divided in the ratio 3:1. Then,

85000×1242500×x=31

 --> x = 8 months.

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Filed Under: Partnership
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6 5616
Q:

When a discount of 25% is given on a wedding gown, the profit is 32%. If the discount is 17%, then the profit is _____%.

A) 46.08 B) 49
C) 51.03 D) 43.16
 
Answer & Explanation Answer: A) 46.08

Explanation:
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Filed Under: Profit and Loss
Exam Prep: Bank Exams

10 5615
Q:

What is the remainder when 1523+2323 is divided by 19 ?

A) 4 B) 3
C) 1 D) 0
 
Answer & Explanation Answer: D) 0

Explanation:

1523+2323=19-423+19+423  

 The remainder on dividing by 19 will be -423+423= 0.

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Filed Under: Numbers
Exam Prep: CAT
Job Role: Bank PO

8 5614
Q:

In an election between two candidates 70% of the voters cast their votes, out of which 2% of the votes were declared invalid. A candidate got 7203 votes which was 60% of the total valid votes. Find the total number of voters enrolled in that election.

A) 18050 B) 17500
C) 17000 D) 7203
 
Answer & Explanation Answer: B) 17500

Explanation:

Let total number of votes enrolled = x
No. of voted cast = 70% of x = 0.7x
Valid votes = 98% of 0.7x
⇒ 60% of total valid votes = 7203 = 60% of 98% of 0.7x
⇒ 0.6 X 0.98 X 0.7x = 7203
⇒ x = 7203 / (0.6 X 0.98 X 0.7)
⇒ x = 17500

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Filed Under: Percentage
Exam Prep: Bank Exams

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