Aptitude and Reasoning Questions

Q:

The average score of boys in an examination in a school is 81 and that of the girls is 83 and the average score of the school is 81.8. Then what will be ratio between the number of girls to the number of boys, in the examination?

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

Explanation:

Let the number of boys = b

Let the number of girls = g

From the given data,

 

81b + 83g = 81.8(b + g)

81.8b - 81b = 83g - 81.8g

0.8b = 1.2g

b/g = 1.2/0.8 = 12/8 = 3/2

=> g : b = 2 : 3

 

Hence, ratio between the number of girls to the number of boys = 2 : 3.

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Q:

Which of the fallowing is not a leap year?

A) 2000 B) 2008
C) 2009 D) 2012
 
Answer & Explanation Answer: C) 2009

Explanation:

Leap year means the year that can be divisible by 4. From the above options 2009 is not divisible by 4. So it is not a leap year.

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Q:

Consider the given argument and decide which of the given assumptions is (are) implicit.

 

Argument :

 

A top television company announced up to 50% discount on their new launch of LED TV.

 

Assumptions :

 

1. The sales of the LED TV may increase.

2. The company will become the top seller of the LED TV.

 

A) Both 1 and 2 are implicit B) Only assumption 1 is implicit
C) Neither 1 nor 2 is implicit D) Only assumption 2 is implicit
 
Answer & Explanation Answer: B) Only assumption 1 is implicit

Explanation:
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Filed Under: Statement and Assumptions
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Q:

The population of a rural region is expected to fall by 2% per year for the next 10 years. If the region’s current population is 100,000, what is the expected population 10 years from now?

A) 81707 B) 91707
C) 61707 D) 71707
 
Answer & Explanation Answer: A) 81707

Explanation:

i=j/m

FV = PV(1 + i)^n

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Q:

Ten years ago, A was half of B in age. If the ratio of their present ages is 3:4, then what will be the total of their present ages?

Answer

Let A's age 10 years ago be x years . Then B's age 10 years ago be 2x years





 Total of their present ages = x + 10 + 2x + 10


= 3x+20


= 3 * 5 + 20 = 35 years


 

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Subject: Problems on Ages

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Q:

A student council of 5 members is to be formed from a selection pool of 6 boys and 8 girls.How many councils can have Jason on the council?

A) 715 B) 725
C) 419 D) 341
 
Answer & Explanation Answer: A) 715

Explanation:

If Jason is on th ecouncil,this reduces the selction pool to only 13 people,out of which we still need to select 4.

 

So, 13C4 = 715

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Q:

The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and 15 as remainder. What is the smaller number  ?

A) 270 B) 1270
C) 350 D) 720
 
Answer & Explanation Answer: A) 270

Explanation:

Let the smallest number be x.
Then larger number = (x + 1365)
x + 1365 = 6x + 15
= 5x = 1350
x = 270
Smaller number = 270.

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Q:

0.01+0.0064 =?

A) 0.03 B) 0.3
C) 0.42 D) None of these
 
Answer & Explanation Answer: B) 0.3

Explanation:

0.01+0.0064=0.01+6410000=0.01+8100 =0.01+0.08=0.3

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