Aptitude and Reasoning Questions

Q:

The average marks obtained by a group of 16 students was 20. One student left the group as a result of which the average of the remaining students rose to 21. But another student joined, as a result of which the average marks of the group dropped a bit and became 20.5. What was the average marks obtained by the student who left and the one who joined?

A) 10 B) 11
C) 8 D) 9
 
Answer & Explanation Answer: D) 9

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Filed Under: Average
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Q:

What is the angle between centripetal acceleration and tangential acceleration?

A) 90° B) 45°
C) 0° D) 180°
 
Answer & Explanation Answer: A) 90°

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Filed Under: Area
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Q:

Two numbers are 50% and 80% 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) 150 percent B) 60 percent
C) 30 percent D) 37.5 percent
 
Answer & Explanation Answer: A) 150 percent

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Filed Under: Percentage
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Q:

On dividing 8a2b2c2 by 4a2, we get

A) 2b2 B) 2c2
C) 2b2c2 D) 2
 
Answer & Explanation Answer: C) 2b2c2

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Filed Under: Simplification
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Q:

If a retailer offers a discount of 32% on the marked price of his goods and thus ends up selling at cost price, what was the % markup price?

A) 24 percent B) 47.05 percent
C) 22.34 percent D) 32 percent
 
Answer & Explanation Answer: B) 47.05 percent

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Filed Under: Percentage
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Q:

In the following question, select the odd word from the given alternatives.

A) Mobile B) Computer
C) Fountain Pen D) Television
 
Answer & Explanation Answer: C) Fountain Pen

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Filed Under: Odd Man Out
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Q:

Each  of  the  following  questions has   four   statements.   Three   are   logically correct.  Some  of  which  may  look  factually absurd.  Ignore  this  absurdity  and  look  to  the logical   corrections.   Choose   the   statement which is wrong or doubtful:-

A) Ramesh is tall. Ramesh is a boy. Therefore, boys are tall. B) All who can fly are animals. Some birds can fly. Therefore, some birds are animals.
C) Men  live  in houses.  Houses  grow  on trees. Trees  floatinwater.  Therefore,  men  float  in water. D) All  living  things  are  mobile.  Some  non-living   things   are   mobile.   Therefore,   some mobile are living and some non-living
 
Answer & Explanation Answer: A) Ramesh is tall. Ramesh is a boy. Therefore, boys are tall.

Explanation:
There is not any relation between boys and tall. So, we cannot say anything.
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Q:

In an army selection process, the ratio of selected to unselected was 6:1. If 90 less had applied and 30 less selected, the ratio of selected to unselected would have been 8:1. How many candidates had applied for the process?

A) 3150 B) 6300
C) 4725 D) 1575
 
Answer & Explanation Answer: D) 1575

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Filed Under: Ratios and Proportions
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