Aptitude and Reasoning Questions

Q:

Two angles whose sum is 180 degrees are

A) Complimentary angles B) Supplementary angles
C) Alternate angles D) None of the above
 
Answer & Explanation Answer: B) Supplementary angles

Explanation:

Two angles whose sum is 180 degrees are called supplementary angles.

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Q:

Statement 1: Elizabeth has four children.
Statement 2: Two of the children have blue eyes and two of the children have brown eyes.
Statement 3: Half of the children are girls.
If the first three statements are facts, which of the following statements must also be a fact?

a. At least one girl has blue eyes.
b. Two of the children are boys.
c. The boys have brown eyes.

A) a only B) a and b
C) b only D) b and c
 
Answer & Explanation Answer: C) b only

Explanation:

Since half of the four children are girls, two must be boys. It is not clear which children have blue or brown eyes. So only statement (b) follows.

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Q:

Group the given figures into three classes using each figure only once.

   9_(1)1484718122.png image

A) 1,5,9 ; 2,7,8 ; 3,4,6 B) 2,4,9 ; 6,7,8 ; 1,3,5
C) 3,7,8 ; 4,5,9 ; 1,2,6 D) 1,5,6 ; 4,7,8 ; 2,3,9
 
Answer & Explanation Answer: B) 2,4,9 ; 6,7,8 ; 1,3,5

Explanation:

2, 4, 9 have two similar elements intersecting each other.
6, 7, 8 have two different elements one placed inside the other.
1, 3, 5 have two different elements intersecting each other.

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Filed Under: Grouping of Images
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Q:

__bam__amb__m__a__bam

A) mbabm B) abmab
C) mabma D) ambbm
 
Answer & Explanation Answer: A) mbabm

Explanation:

Here "mba" is repeated 

 mbambambambambam

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Filed Under: Number Series

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Q:

A research team of 6 people is to be formed from 10 chemists,5 politicians, 8 economists and 15 biologists.How many teams have atleast 5 chemists?

A) 7350 B) 6400
C) 6379 D) 7266
 
Answer & Explanation Answer: D) 7266

Explanation:

10C5 x 28C1 x 10C6 = 7266

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Q:

A boat covers 63 km upstream in 9 hours and covers the same distance downstream in 7 hours . What is the speed (in km/ hr) of the boat in still water?

A) 8.7 B) 8.5
C) 7 D) 8
 
Answer & Explanation Answer: D) 8

Explanation:
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Q:

If 27th December 2009 was a Thursday, then what day of the week was it on 1st March 2010?

A) Thursday B) Friday
C) Sunday D) Monday
 
Answer & Explanation Answer: B) Friday

Explanation:
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Q:

What is Latus Rectum of Parabola?

A) line segment B) vertex
C) focus D) major axis
 
Answer & Explanation Answer: A) line segment

Explanation:

As parabola is a locus of a point, which moves so that its distance from focus and directrix is always equal.

 

The latus rectum of a conic section is the chord (line segment) that passes through the focus, is perpendicular to the major axis and has both endpoints on the curve. The length of the latus rectum is determined differently for each conic.

                                      download1522126663.jpg image

 

The length of a parabola's latus rectum is 4p, where p is the distance from the focus to the vertex.

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