Aptitude and Reasoning Questions

Q:

The sum of 6xy(2x - 4z) , 3yz(2x - 3z) and 4xz(3y - 2y2) is

A) 12x2y - 6xyz - 9yz2 + 8xy2z B) 12x2y - 6xyz + 9yz2 - 8xy2z
C) 12x2y - 6xyz - 9yz2 - 8xy2z D) 12x2y + 6xyz - 9yz2 - 8xy2z
 
Answer & Explanation Answer: C) 12x2y - 6xyz - 9yz2 - 8xy2z

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Filed Under: Simplification
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Q:

An aeroplane flying horizontally at a height of 3 Km. above the ground is observed at a certain point on earth to subtend an angle of 60°. After 15 sec flight, its angle of elevation is changed to 30°. The speed of the aeroplane (taking √3 = 1.732) is

A) 230.63 m/sec B) 230.93 m/sec
C) 235.85 m/sec D) 236.25 m/sec
 
Answer & Explanation Answer: B) 230.93 m/sec

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Q:

The average weight of 10 parcels is 1.7 kg. Addition of another new parcel reduces the average weight by 60 gram. What is the weight , in kg, of the new parcel?

A) 1.04 B) 1.08
C) 1.4 D) 1.8
 
Answer & Explanation Answer: A) 1.04

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Filed Under: Average
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Q:

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

200, 100, 50, 25, 12.5, 6.25, ?

A) 2.125 B) 3.025
C) 3.125 D) 2.025
 
Answer & Explanation Answer: C) 3.125

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Filed Under: Number Series
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Q:

10% discount is offered on an item. By applying a promo code the customer wins 20% cash back. What is the effective discount?

A) 33.6 percent B) 30 percent
C) 22 percent D) 28 percent
 
Answer & Explanation Answer: D) 28 percent

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Filed Under: Percentage
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Q:

In the following question, select the related word pair from the given alternatives.
Canada : Ottawa : : ? : ?

A) Egypt : Cairo B) Norway : Havana
C) France : Rome D) Kenya : Teheran
 
Answer & Explanation Answer: A) Egypt : Cairo

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Q:

What is the simplified value of cosec 2A + cot 2A?

A) sec A B) sec (A/2)
C) cot A D) cot2 A
 
Answer & Explanation Answer: C) cot A

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Q:

O is the circumcentre of ΔABC. If AO = 8 cm, then the length of BO is

A) 12 cm B) 3 cm
C) 6 cm D) 8 cm
 
Answer & Explanation Answer: D) 8 cm

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Filed Under: Volume and Surface Area
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