Aptitude and Reasoning Questions

Q:

In a 100 m race, A can give B 10 m and C 28 m. In the same race B can give C:

A) 18 m B) 20 m
C) 27m D) 9 m
 
Answer & Explanation Answer: B) 20 m

Explanation:

A : B = 100 : 90.

 

A : C = 100 : 72.

 

B:C = B/A*A/C = 90/100*100/72 = 90/72

 

When B runs 90 m, C runs 72 m.

 

When B runs 100 m, C runs (72/90*100)m = 80m

 

 B can give C 20 m.

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Filed Under: Races and Games

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Q:

If a mirror is placed on the line AB, then which of the answer figure is the right image of the given figure?

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

Explanation:
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Filed Under: Image Analysis
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Q:

While selling a router, a shopkeeper gives a discount of 15%. If he gives a discount of 20%, he earns Rs. 51 less as profit. What is the original marked price of the router?

A) Rs. 1000 B) Rs. 1020
C) Rs. 1040 D) Rs. 980
 
Answer & Explanation Answer: B) Rs. 1020

Explanation:

Let the marked price of the router be Rs. P

From the given data,

P x 85100 - P x 80100 = 51P x 5100 = 51 P = 51005 = 1020 

 

Hence, the original marked price of the router is Rs. 1020.

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Filed Under: Profit and Loss
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Q:

Vishu,Pooja,Vishakha,Rani and Ram are sitting in a line. Pooja is third to the extreme right end. Vishu is second to the left of Pooja. Vishakha is to the right of Pooja. Rani is third to the right of Ram, who is the immediate neighbour of Vishu. Who is sitting in the middle?

A) Pooja B) Ram
C) Visakha D) Rani
 
Answer & Explanation Answer: A) Pooja

Explanation:
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Filed Under: Arithmetical Reasoning
Exam Prep: Bank Exams

1 3194
Q:

In a fort there was sufficient food for 200 soldiers for 31 days. After 27 days, 120 soldiers left the fort. For how many extra days will the rest of the food last for the remaining soldiers?

A) 12 days B) 10 days
C) 8 days D) 6 days
 
Answer & Explanation Answer: B) 10 days

Explanation:

Quantity of food = 200 X 31 = 6200 man-days

Till 27 days, quantity consumed = 27 X 200 = 5400 man-days

Remaining quantity = 6200 –5400 = 800 man days

Remaining soilders = 200 –120 = 80

Let remaining food will be sufficient for x days⇒5400 + 80x = 6200⇒x= 10 days

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

What is the product of a number and its reciprocal?

A) 0 B) 1
C) -ve of the number D) the number itself
 
Answer & Explanation Answer: B) 1

Explanation:

The product of a number and its reciprocal is always equals to 1.

 

For Example : Let the number be 4.

Now, its reciprocal is 1/4

Hence, required product = 4 x 1/4 = 1.

 

Now, take the number as -15.

Then its reciprocal is -1/15

Required product = -15 x -1/15 = 1.

 

Hence, the product of a number and its reciprocal is 1.

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Filed Under: Arithmetical Reasoning
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Q:

In the following questions are to be based on the details given below.

 

A salesman visits 274 houses in a town to find out the views about three products X, Y and Z. He found that 157 use X, 98 use only X, 22 use all the three, 14 use X and Z but not Y, 39 use Y and Z, 48 use only Y.

 

Which product is the most popular one?

 

A) X B) Y
C) Z D) Both X and Z
 
Answer & Explanation Answer: A) X

Explanation:
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Q:

(3x + 2) (2x - 5) = ax² + kx + n. What is the value of  a - n + k ?

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

Explanation:

(3x + 2) (2x - 5) = ax2+kx+n ...............(1)

 

But (3x + 2)(2x - 5) = 6x2-11x-10........(2)

 

so by comparing (1) & (2),

 

we get a= 6, k= -11 , n= -10

 

(a - n + k) = 6 + 10 - 11 = 5.

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Filed Under: Numbers
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