Aptitude and Reasoning Questions

Q:

What is the difference (in Rs) in Compound interest earned in 1 year on a sum of Rs 10,000 at 40% per annum compounded quarterly and annually?

A) 461 B) 346
C) 463 D) 641
 
Answer & Explanation Answer: D) 641

Explanation:
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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

The weights of 4 boxes are 20, 30, 50 and 70 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?

A) 170 B) 160
C) 150 D) 120
 
Answer & Explanation Answer: B) 160

Explanation:
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Q:

What does it mean to calculate frequencies within a dataset? 

A) to calculate the product of two variables to make a third variable B) to count the number of cases that fall into different subgroups within a dataset
C) to count the number of times a dataset is used by a student D) to calculate the sum of a column of variables in a dataset
 
Answer & Explanation Answer: B) to count the number of cases that fall into different subgroups within a dataset

Explanation:

Frequency is what means how many times the event occurs in the same period.

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Filed Under: Arithmetical Reasoning
Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

3/8 as a decimal

A) 1.375 B) 2.375
C) 0.375 D) 3.75
 
Answer & Explanation Answer: C) 0.375

Explanation:

Expressing 3/8 as a decimal fraction:

We can convert 3/8 into a decimal fraction by just dividing 3 by 8 or making 3 into 8 parts.

Then, it is 3/8 = 0.375 as a decimal fraction.

 

Other Method::

3/8 as a Decimal :

In this we should convert the denominator into 10, 100, 1000, 10000, 100000,... to make it simple.

Now to make 8 into 1000, we multiply numerator and denominator with 125

 

=> (3 x 125)/(8 x 125) = 375/1000 = 0.375.

 

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Q:

Two numbers are 50% and 75% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?

A) 50 B) 25
C) 75 D) 100
 
Answer & Explanation Answer: D) 100

Explanation:
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Filed Under: Problems on Numbers
Exam Prep: Bank Exams

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Q:

What is the value of sin (630 + A) + cos A?

A) √3/2 B) 1/2
C) 0 D) 2/√3
 
Answer & Explanation Answer: C) 0

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

In the given figure, SX is tangent. SX = OX = OR. If QX = 3 cm and PQ = 9 cm, then what is the value (in cm) of OS?

A) 6 B) 5
C) 4 D) 3
 
Answer & Explanation Answer: D) 3

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

Which of the following activities are examples of data gathering?

A) Counting the votes in an election to determine the next governor B) Making a pie chart showing the kinds of television sets owned by people in a sample of 1,000
C) Finding the mean weight of cancer patients in a study D) Using the results of a mathematical model to predict the next day's weather
 
Answer & Explanation Answer: A) Counting the votes in an election to determine the next governor

Explanation:

Option A) "Counting the votes in an election to determine the next governor"  is the only one where data gathering is done.

 

In all other options, data is already collected and now analyzing of data is going on.

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