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Q:

A,B,C together can do a piece of work in 10 days.All the three started workingat it together and after 4 days,A left.Then,B and C together completed the work in 10 more days.In how many days can complete a work alone ?

A) 25 B) 24
C) 23 D) 21
 
Answer & Explanation Answer: A) 25

Explanation:

(A+B+C) do 1 work in 10 days.

So (A+B+C)'s 1 day work=1/10 and as they work together for 4 days so workdone by them in 4 days=4/10=2/5


Remaining work=1-2/5=3/5

 

(B+C) take 10 more days to complete 3/5 work. So( B+C)'s 1 day work=3/50


Now A'S 1 day work=(A+B+C)'s 1 day work - (B+C)'s 1 day work=1/10-3/50=1/25

A does 1/25 work in in 1 day

Therefore 1 work in 25 days.

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

128 53126
Q:

Sinθ Cos(90 - θ) + Cosθ Sin(90 - θ) = 

 

A) 1 B) 2
C) -1 D) 0
 
Answer & Explanation Answer: A) 1

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 53063
Q:

Select the related word from the given alternatives.

Pencil : Lead :: Pen : ?

A) Ball B) Write
C) Blue D) Ink
 
Answer & Explanation Answer: D) Ink

Explanation:
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Filed Under: Analogy
Exam Prep: Bank Exams

0 53026
Q:

R+JM2$#QR?*O@7F3

 

Using the above sequence fill in the blank.

 

R#* : J?F :: $OJ : ___

 

A) #@3 B) QF*
C) QF# D) MOF
 
Answer & Explanation Answer: C) QF#

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

1 53017
Q:

Pick an odd man in the given number series?

4 12 38 87 198

A) 12 B) 38
C) 87 D) 198
 
Answer & Explanation Answer: A) 12

Explanation:

The given series follows a pattern that,

 

4 + 32 = 4 + 9 = 1313 + 52 = 13 + 25 = 3838 + 72 = 38 + 49 = 8787 + 92 = 87 + 81 = 198 

 

Hence, the odd man in the given number series is 12.

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Filed Under: Odd Man Out
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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4 52998
Q:

Which of the following statement(s) about acids is/are CORRECT ?
 
I. They change the color of red litmus to blue.
II. They change the color of blue litmus to red.
III. They have pH value less than 7.
 

A) Only I and III B) Only II and III
C) Only I D) Only II
 
Answer & Explanation Answer: B) Only II and III

Explanation:
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Filed Under: Chemistry
Exam Prep: Bank Exams

0 52988
Q:

ΔDEF is right angled at E. If cosecD = 25/24, then what is the value of cosF ?

 

A) 25/7   B) 24/7  
C) 24/25   D) 7/24
 
Answer & Explanation Answer: C) 24/25  

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

0 52936
Q:

The relative density of a substance is the ____.

 

A) ratio of its density to the density of water B) ratio of the density of water to its density
C) product of the density of water to its density D) ratio of the volume of water to its volume
 
Answer & Explanation Answer: A) ratio of its density to the density of water

Explanation:
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Filed Under: Physics
Exam Prep: Bank Exams

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