Aptitude and Reasoning Questions

Q:

Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative 

Assertion(A)  : Graphite is slippery and used as a lubricant. 

Reason (R)    : Graphite has free electrons. 

A) Both A and R are true and R is the correct explanation of A. B) Both A and R are true but R is NOT the correct explanation of A.
C) A is true but R is false. D) A is false but R is true.
 
Answer & Explanation Answer: B) Both A and R are true but R is NOT the correct explanation of A.

Explanation:

Graphite possesses a layer structure with two successive layers held by weak forces and able to slide over one another. So, graphite is slippery and this property finds its use as a lubricant. In graphite, each carbon atom is linked to three other carbon atoms while one electron in the carbon atom is delocalised. So, graphite has free electrons 

 

 

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Filed Under: Assertion and Reason

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Q:

Which of the following statement is sufficient to answer the question?

 

Find the values of x, y, z from the given statements.

 

Statements :

 

I. x + y =12; x + z = 4

II. x - y = 6

 

A) Only II is sufficient while I is not B) Neither I nor II is sufficient
C) Both I and II are sufficient D) Only I is sufficient while II is not
 
Answer & Explanation Answer: D) Only I is sufficient while II is not

Explanation:
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Filed Under: Statement and Conclusions
Exam Prep: Bank Exams

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Q:

If the compound interest on a certain sum at 1623% to 3 years is Rs.1270, find the simple interest on the same sum at the same rate and f or the same period.

A) 1080 B) 1090
C) 1180 D) 1109
 
Answer & Explanation Answer: A) 1080

Explanation:

Let the sum be Rs. x. Then,

 

 C.I=x*50300*1003-x=343x216-x=127x216 

 

127x216=1270 

 

x=2160 

 

Thus, the sum is Rs. 2160

 

 S.I=Rs.2160*503*3*1100=Rs 1080

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Filed Under: Compound Interest
Exam Prep: Bank Exams
Job Role: Bank PO

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Q:

Find the value of (?) in the series

3, 4, 6, 8, 12, ?, 18

 

A) 13 B) 14
C) 15 D) 16
 
Answer & Explanation Answer: B) 14

Explanation:
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Filed Under: Number Series
Exam Prep: Bank Exams

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Q:

Arrange the following words as per order in the dictionary.

1.Launch 2. Laugh 3. Lattice 4. Latent 5. Latitude

A) 4,5,3,2,1 B) 4,3,5,1,2
C) 4,5,1,2,3 D) 4,5,1,3,2
 
Answer & Explanation Answer: A) 4,5,3,2,1

Explanation:
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Filed Under: Logical Sequence of Words
Exam Prep: Bank Exams

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Q:

What was the day of the week on 16th August, 1947?

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

Explanation:

15th August, 1947 = (1946 years + Period from 1st Jan., 1947 to 15th )

 

Counting of odd days:

 1600 years have 0 odd day. 300 years have 1 odd day.

 

 47 years = (11 leap years + 36 ordinary years)= [(11 x 2) + (36 x 1) ]odd days = 58 odd days = 2 odd days.

 

Jan  Feb  Mar  Apr  May  Jun  Jul  Aug.

31 + 28 + 31 + 30 + 31 + 30 + 31 + 15 = 227 days = (32 weeks + 3 days) = 3,

 

Total number of odd days = (0 + 1 + 2 + 3) odd days = 6 odd days.

 

Hence, the required day was 'Saturday'.

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Filed Under: Calendar

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Q:

The average price of three items of furniture is Rs. 15000. If their prices are in the ratio 3:5:7, the price of the cheapest item is :

A) 6000 B) 7000
C) 8888 D) 9000
 
Answer & Explanation Answer: D) 9000

Explanation:

Let their prices be 3x,  5x and 7x.

Then, 3x + 5x + 7x = (15000 * 3) or x = 3000.

Cost of cheapest item = 3x = Rs. 9000.

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Filed Under: Average

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Q:

In the given figure, how many pens are blue?

 

A) 23 B) 19
C) 12 D) 15
 
Answer & Explanation Answer: A) 23

Explanation:
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