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Q:

Out of first 20 natural numbers, one number is selected at random. The probability that it is either an even number or a prime number is  ?

A) 16/19 B) 1
C) 3/2 D) 17/20
 
Answer & Explanation Answer: D) 17/20

Explanation:

n(S) = 20
n(Even no) = 10 = n(E)
n(Prime no) = 8 = n(P)
P(E U P) = 10/20 + 8/20 - 1/20 = 17/20

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Filed Under: Probability
Exam Prep: Bank Exams , CAT , GATE
Job Role: Bank Clerk , Bank PO

15 13795
Q:

A cow s tethered in the middle of a field with a 14feet long rope.If the cow grazes 100 sq feet per day, then approximately what time will be taken by the cow to graze the whole field?

A) 616 B) 716
C) 816 D) 516
 
Answer & Explanation Answer: A) 616

Explanation:

area of the field grazed = (22/7) * 14 * 14 = 616 sq feet

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

5 13795
Q:

10 examples of computer hardware?

Answer

A computer system consists of two major elements: hardware and software. Computer hardware is the collection of all the parts you can physically touch. Computer software, on the other hand, is not something you can touch. Software is a set of instructions for a computer to perform specific operations. You need both hardware and software for a computer system to work.


10 examples of computer hardware are ::


1. Monitor


2. Motherboard


3. CPU(Microprocessor) 


4. Main memory(RAM)


5. Expansion cards 


6. Power supply unit


7. Optical disc drive 


8. Hard disk drive (HDD)


9. Keyboard


10. Mouse

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Subject: Computer Exam Prep: AIEEE , Bank Exams
Job Role: Analyst , Bank PO , Database Administration , IT Trainer , Network Engineer

26 13793
Q:

In a 40 litre mixture of alcohol & water, the ratio of alcohol and water is 5 : 3. If 20% of this mixture is taken out and the same amount of water is added then what will be the ratio of alcohol and water in final mixture?

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

Explanation:

Quantity of alohol in the mixture = 40 x 5/8 = 25 lit

Quantity of water = 40 - 25 = 15 lit

According to question,

Required ratio = 20 - 40 x 20100 x 5815 - 40 x 20100 x 38 + 40 x 20100 = 2015 - 3 + 8 = 1 : 1

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Filed Under: Alligation or Mixture
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

27 13789
Q:

I jump when I walk and sit when I stand. What am I?

Answer

A Kangaroo is what jumps when walking and sit when it is in standing.

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Subject: Word Puzzles Exam Prep: TOEFL , GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

18 13783
Q:

Nandini is the only daughter of Madan's sister Sangita's brother. How is Nandini related to Madam?

A) Daughter B) Niece
C) Cousin D) Niece or Daughter
 
Answer & Explanation Answer: D) Niece or Daughter

Explanation:
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Filed Under: Blood Relations
Exam Prep: Bank Exams
Job Role: Bank PO

53 13772
Q:

The percentage discount offered for "Buy 6 get 1 free is" ?

A) 85.78 % B) 58. 48 %
C) 19.25 % D) 14.285 %
 
Answer & Explanation Answer: D) 14.285 %

Explanation:

Total Items = 7
Discounted = 1
Percentage = 1/7 x 100
= 14.285%

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Filed Under: Percentage
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
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16 13758
Q:

Suppose today is Friday, what day of the week will it be 65 days from now?

A) Saturday B) Sunday
C) Friday D) Thursday
 
Answer & Explanation Answer: B) Sunday

Explanation:

The day of the week repeats every 7 days.

Given today is Friday. Again Friday is repeated on the 7th day, 14th,... on 7 multiple days.

Hence, Friday is on the 63rd day, as 63 is multiple of 7.

 

Now, the required day of the week on the 65th day is Sunday.

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Filed Under: Calendar
Exam Prep: AIEEE , Bank Exams , CAT , GATE
Job Role: Analyst , Bank Clerk , Bank PO

56 13756