Exams


Q:

An observer 1.6 m tall is 203away from a tower. The angle of elevation from his eye to the top of the tower is 30º. The heights of the tower is:

A) 21.6 m B) 23.2 m
C) 24.72 m D) None of these
 
Answer & Explanation Answer: A) 21.6 m

Explanation:

 

 

 

 Draw BE // CD

 

Then, CE = AB = 1.6 m,

 

BE = AC =

 DEtan30=> DE = tan30 x 203=> DE = 13x203 = 20

 

Therefore, CD = CE + DE = (1.6 + 20) m = 21.6 m.

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

24 25493
Q:

Which of the following terms follows the trend of the given list?

AAAAAAA, BAAAAAA, BBAAAAA, BBBAAAA, BBBBAAA, _______________

A) BBBBBBA B) BBBBBAA
C) AAAAAAA D) BAAAAAA
 
Answer & Explanation Answer: A) BBBBBBA

Explanation:
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Filed Under: Alphabet Test
Exam Prep: Bank Exams

1 25483
Q:

A cistern is normally filled in 8 hours but takes two hours longer to fill because of a leak in its bottom. If the cistern is full, the leak will empty it in    ?

A) 20 hrs B) 28 hrs
C) 36 hrs D) 40 hrs
 
Answer & Explanation Answer: A) 20 hrs

Explanation:

1/8 - 1/x = 1/10

 => x = 40 hrs

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Filed Under: Pipes and Cistern
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67 25455
Q:

A does half as much work as Band C does half as much work as A and B together. If C alone can finish the work in 40 days, then together ,all will finish the work in  ?

A) 17 + 4/7 days B) 13 + 1/3 days
C) 15 + 3/2 days D) 16 days
 
Answer & Explanation Answer: B) 13 + 1/3 days

Explanation:

C alone can finish the work in 40 days.
As given C does half as much work as A and B together
=> (A + B) can do it in 20 days
(A + B)s 1 days wok = 1/20.
A's 1 days work : B's 1 days Work = 1/2 : 1 = 1:2(given)
A's 1 day’s work = (1/20) x (1/3) = (1/60) [Divide 1/20 in the raio 1:2]
B's 1 days work = (1/20) x (2/3) = 1/30
(A+B+C)'s 1 day's work = (1/60) + (1/30) + (1/40) = 9/120 = 3/40

All the three together will finish it in 40/3 = 13 and 1/3 days.

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Filed Under: Time and Work
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47 25452
Q:

Computer software can be defined as

 

A) the interaction between the computer and its database B) an interface between the computer and the network
C) the computer and its associated equipment D) the instructions that tell the computer what to do
 
Answer & Explanation Answer: D) the instructions that tell the computer what to do

Explanation:
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Filed Under: Computer
Exam Prep: Bank Exams

3 25451
Q:

Refer the below data table and answer the following question.

For which of the following pairs of years the total exports from the three companies together are equal? (in lakhs)

 

A) 2011 & 2013 B) 2013 & 2015
C) 2011 & 2012 D) 2014 & 2012
 
Answer & Explanation Answer: D) 2014 & 2012

Explanation:
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Filed Under: Table Charts
Exam Prep: Bank Exams

0 25444
Q:

Choose the correct alternative from the given ones that will complete the series.

GON, JRQ, MUT, ?

A) NOG B) PXW
C) JQR D) TUM
 
Answer & Explanation Answer: B) PXW

Explanation:
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Filed Under: Alphabet Test
Exam Prep: Bank Exams

0 25434
Q:

What is the probability that a leap year has 53 Saturdays and 52 Sundays ?

A) 1/7 B) 2/7
C) 1/2 D) 3/2
 
Answer & Explanation Answer: A) 1/7

Explanation:

A leap year has 52 weeks and two days
Total number of cases = 7
Number of favourable cases = 1
i.e., {Friday, Saturday}

Required Probability = 1/7

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Filed Under: Probability
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28 25410