Aptitude and Reasoning Questions

Q:

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

Assertion (A) :   Bats can fly in the night.

Reason (R) :      Bats emit ultrasonics. 

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: A) Both A and R are true and R is the correct explanation of A.

Explanation:

Bats can fly in the night because they can trace the obstacle in the path by perceiving the echo of the ultrasonic sound emitted by them after it is reflected by the obstacle. 

 

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Q:

If a positive integer n, divided by 5 has a remainder 2, which of the following must be true?

A) n is odd B) n + 1 cannot be a prime number
C) (n + 2) divided by 7 has remainder 2 D) n + 3 is divisible by 5
 
Answer & Explanation Answer: D) n + 3 is divisible by 5

Explanation:

You can find the integers which when divided by 5 have a remainder 2 by adding 2 to all multiples of 5. So we have n = 7 , 12, 17, 22 etc.

From this series we can see that n does not have to be odd.

Also n + 1 can be a prime because, for example, 12 + 1 = 13

And (n + 2) / 7 has a remainder 2 in some cases but not all.

Remember the question asks us for what MUST be true, and we see that none of the statements are true in all cases. However, adding 3 to any of the values of n will always give a multiple of 5.

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Filed Under: Numbers
Exam Prep: GRE

4 11287
Q:

If 3x-y=273x+y=243 then find the x value

A) 2 B) 8
C) 4 D) 1
 
Answer & Explanation Answer: C) 4

Explanation:

Given that 3x-y=273x+y=243

3x-y =33 , 3x+y=35

 => x-y=3, x+y=5

 => x = 4

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Exam Prep: CAT
Job Role: Bank Clerk

15 11281
Q:

In ∆PQR measure of angle Q is 90 deg. If cosecP = 17/15, and PQ = 0.8cm, then what is the length (in cm) of side QR?

 

A) 1.7   B) 2  
C) 2.5   D) 1.5
 
Answer & Explanation Answer: D) 1.5

Explanation:
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Exam Prep: Bank Exams

0 11272
Q:

Should India create a huge oil reserve inorder to face some difficult situations in future 

Arguments:

1. No. There is no need to block huge amounts of foreign exchange and keep the money die

2. Yes. This will keep India withstand shocks of sudden rise in oilprices due to un forseen circumstances

A) Only 1 is true B) Only 2 is true
C) Either 1 or 2 is true D) Neither 1 nor 2 is true
 
Answer & Explanation Answer: B) Only 2 is true

Explanation:

Oil being an essential commodity ,our country must keep it in reserve.So argument 1 is vague,while argument 2 holds as it provides a substancial reason for the same

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2 11268
Q:

Arun and Amit started walking from two different points 'A' and 'B' respectively.Arun walks 2 kms North and turns to the East and walks 3 kms and again turns to North walks 4 kms and finally turns to East and Walks 5kms to reach point 'C'. Similarly, Amit walks 2 kms North and turns to west and walks 3 kms and finally turns to North, walks 4 kms and meets Arun at point 'C'. What is the distance between Arun and Amit's starting points?

 

A) 5 km B) 8 km
C) 11 km D) 13 km
 
Answer & Explanation Answer: C) 11 km

Explanation:

Where A= Arun's starting point; B = Amit's starting point; C = The point where Arun and Amit meet

PQ + RC + ST = 3 + 5 + 3 = 11 kms.

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Q:

Find the total number of cubes in the given figure ?

              Untitled-11484632107.jpg image

A) 56 B) 60
C) 64 D) 72
 
Answer & Explanation Answer: A) 56

Explanation:

(Total numbers of cubes in a line  x  Number of stack / tower) + ...

= (6x1)+(5x2)+(4x3)+(3x4)+(5x2)+(6x1)

= 6+10+12+12+10+6 = 56

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Filed Under: Cubes and Dice
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

47 11260
Q:

Laxmi goes 6 km towards South-East from her office.Then she goes 15 km turning to West. After this she goes 6 km towards North-West and in the end she goes 11 km towards East. How far is she from her office ?

A) 10 km B) 11 km
C) 4 km D) 6 km
 
Answer & Explanation Answer: C) 4 km

Explanation:

                                 saw11482832881.jpg image

From the above fig we can observe that distance between Laxmi and her office is 15-11 = 4 kms.

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