Aptitude and Reasoning Questions

Q:

What is the area (in sq cm) of a regular hexagon of side 6 cm?

A) 27√3 B) 54√3
C) 54 D) 27
 
Answer & Explanation Answer: B) 54√3

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Filed Under: Area
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Q:

If a+1a2 = 3, then the value of  a3+1a3 is

A) 0 B) a
C) 1/a D) 1
 
Answer & Explanation Answer: A) 0

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Filed Under: Simplification
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Q:

Which of the following statements is not true?

A) The difference of two prime numbers, both greater than 2, is divisible by 2 B) For two different integers m, n and a prime number p, if p divides the product m × n, then p divides either m or n.
C)  If a number is of the form 6n –1 (n being a natural number), then its is a prime number. D) There is only one set of three prime numbers such that there is a gap of 2 between two adjacent prime numbers.
 
Answer & Explanation Answer: D) There is only one set of three prime numbers such that there is a gap of 2 between two adjacent prime numbers.

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Filed Under: Numbers
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Q:

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

A) B B) N
C) P D) W
 
Answer & Explanation Answer: D) W

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Filed Under: Odd Man Out
Exam Prep: Bank Exams

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Q:

The difference between compound interest and simple interest on Rs. 5000 for 2 years at 8% per annum payable yearly is

A) Rs.30 B) Rs.31
C) Rs.33 D) Rs.32
 
Answer & Explanation Answer: D) Rs.32

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Filed Under: Simple Interest
Exam Prep: Bank Exams

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Q:

If, 1*2= 1,
2*3= ­1 and
3*4= ­5, Then find the value of 7*9= ?

A) -47 B) -29
C) -2 D) -9
 
Answer & Explanation Answer: A) -47

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Filed Under: Mathematical Operations
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Q:

A boat travels 24 km upstream in 6 h and 20 km downstream in 4 h. then, the speed of a boat in still water and the speed of current are respectively

A) 4.5 km/h and 3 km/h B) 4.5 km/h and 0.5 km/h
C) 4 km/h and 2 km/h 5 km/h and 2 km/h D) 5 km/h and 2 km/h
 
Answer & Explanation Answer: B) 4.5 km/h and 0.5 km/h

Explanation:

Distance travelled by boat in upstream=24km

Time taken = 6 h

Speed of the boat in upstream = 24/6 = 4 km/h

And distance travelled by boat in downstream = 20 km

Time taken = 4h Speed of the boat in downstream = 20/4 km/h = 5 km/h

Now, speed of the boat in still water = 1/2 [ speed of the boat in upstream + speed of the boat in downstream] =1/2 [4 + 5] = 1/2 × 9 = 4.5 km/h

And speed of the current = 1⁄2 [speed of the boat in downstream – speed of the boat in upstream] = 1/2 [5 – 4] = 1/2 × 1 = 0.5 km/h

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Filed Under: Boats and Streams
Exam Prep: Bank Exams

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Q:

If - stands for division, + for multiplication, ÷ for subtraction, x for addition, then which of the following equations is correct?

A) 20 - 4 + 6 ÷ 9 x 4 = 25 B) 20 + 6 - 4 x 9 ÷ 6 = 32
C) 20 ÷ 9 x 9 - 4 + 6 = 33 D) 20 x 4 - 6 - 4 + 9 = 20
 
Answer & Explanation Answer: A) 20 - 4 + 6 ÷ 9 x 4 = 25

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