Aptitude and Reasoning Questions

Q:

The quadratic equation 1+a2x2+2abx+b2-c2=0 has only one root. What is the value of c21+a2 ?

A) a2 B) b2
C) c2 D) ab
 
Answer & Explanation Answer: B) b2

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Filed Under: Simplification
Exam Prep: Bank Exams

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Q:

Painter A can paint a house in 40 days and Painter B can do it in 60 days. With help of C, they did the job in 20 days only. Then, C alone can do the job in

A) 120 days B) 100 days
C) 90 days D) 80 days
 
Answer & Explanation Answer: A) 120 days

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Filed Under: Time and Work
Exam Prep: Bank Exams

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Q:

Two pipes, when working one at a time, can fill a cistern in 3 hhrs and 4 hrs, resp while a third pipe can drain the cistern empty in 8 hrs. All the three pipes were opened together when the cistern was 1/12 full. How long did it take for the cistern to be completely full?

A) 2 hrs B) 1 hr 45 min
C) 2 hr 10 min D) 2 hr 11 min
 
Answer & Explanation Answer: A) 2 hrs

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Filed Under: Pipes and Cistern
Exam Prep: Bank Exams

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Q:

P and Q are sisters. R and S are brothers. P's daughter is R's sister. What is Q's relation to S?

A) Mother B) Grandmother
C) Sister D) Aunt
 
Answer & Explanation Answer: D) Aunt

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Filed Under: Blood Relations
Exam Prep: Bank Exams

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Q:

If "P" denotes "multiplied by", "R" denotes "subtracted from", "S" denotes "added to" and "Q" denotes "divided by", then which of the following equation is true?

A) 18 R 60 Q 15 S 2 = 8 B) 15 S 16 Q 2 P 4 = 47
C) 3 P 5 R 18 Q 3 = 6 D) 15 S 28 Q 4 P 2 = 27
 
Answer & Explanation Answer: B) 15 S 16 Q 2 P 4 = 47

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Filed Under: Coding and Decoding
Exam Prep: Bank Exams

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Q:

The complexity of linear search algorithm is

A) O(n2) B) O(n log n)
C) O(n) D) O(log n)
 
Answer & Explanation Answer: C) O(n)

Explanation:

The worst case complexity of linear search is O(n).

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

Sum of four consecutive odd numbers is 208. Find the largest number.

A) 55 B) 57
C) 59 D) 61
 
Answer & Explanation Answer: A) 55

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Filed Under: Problems on Numbers
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Q:

If cosec 240° = x, then the value of x is

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

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Filed Under: Simplification
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