Aptitude and Reasoning Questions

Q:

If x + y = 13 and x2 + y2 = 89, then find xy is

A) 80 B) 169
C) 258 D) 40
 
Answer & Explanation Answer: D) 40

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Q:

If secA + tanA = x, then the value of x is

A) cosA/(1 + sinA) B) √[cosA/(1 - sinA)]
C) √[cosA/(1 + sinA)] D) cosA/(1 - sinA)
 
Answer & Explanation Answer: D) cosA/(1 - sinA)

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Q:

If 5+x+5-x5+x-5-x = 3,then what is the value of x ?

A) 5/2 B) 25/3
C) 4 D) 3
 
Answer & Explanation Answer: D) 3

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Q:

A canal of a village can be cleaned by 24 villagers in 12 days. The number of days in which 36 villagers can clean the canal is ?

A) 18 B) 8
C) 72 D) 16
 
Answer & Explanation Answer: B) 8

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Filed Under: Time and Work
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Q:

If 10x/3 + 5/2(2 - x/3) = 7/2, then the value of x is?

A) 3/5 B) -5/3
C) 5/3 D)  -3/5
 
Answer & Explanation Answer: D)  -3/5

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Q:

If a + b = 3 and ab = -4, then what is the value of a3 + b3?

A) 36 B) 63
C) 12 D) -15
 
Answer & Explanation Answer: B) 63

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Q:

An equal sum is invested in two different schemes. One scheme gives simple interest and the other gives compound interest (annual compounding). The sum of interest obtained after 2 years from both the schemes is Rs 2961. If both schemes have 23% per annum interest rate, then what is the first year interest (in Rs)of simple interest scheme?

A) 500 B) 1100
C) 700 D) 900
 
Answer & Explanation Answer: C) 700

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Filed Under: Simple Interest
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Q:

In a certain code CAMEL is written as MFNBD. How shall TIGER be written in that code?

A) SFUJH B) SFHJU
C) SFJUH D) SHFJU
 
Answer & Explanation Answer: B) SFHJU

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Filed Under: Coding and Decoding
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