Aptitude and Reasoning Questions

Q:

A six-sided die with faces numbered 1 through 6 is rolled three times. What is the probability that the face with the number 6 on it will not face upward on all the three rolls?

A) 215/216 B) 1/216
C) 215/256 D) 1/52
 
Answer & Explanation Answer: A) 215/216

Explanation:

Probability of getting 6 at the top once =1/6

Probability of getting 6 at the top three times =1/6 x 1/6 x 1/6 =216

Probability of no getting 6 at he top any time = 1 - 1/216 = 215/216

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Filed Under: Probability

2 7716
Q:

What is the value of 4 in 475?

A) 4 B) 400
C) 475 D) 40
 
Answer & Explanation Answer: B) 400

Explanation:

The value of 4 in 475 means the place value of 4 in 475 and not its face value. Face value means the digit itself though it is at any place in the given number. But place value means the value of digit in its place in the given number.

 

Here the place value of 4 in 475 can be determined by as 4 is in 100's place in 475.

Hence, the place value of 4 in 475 is 4x100 = 400.

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Filed Under: Numbers
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11 7710
Q:

The concentration of glucose in three different mixtures (glucose and alcohol) is 12,35 and 45 respectively. If 2 litres, 3 litres and 1 litre are taken from these three different vessels and mixed. What is the ratio of glucose and alcohol in the new mixture? 

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

Explanation:

Concentration of glucose are in the ratio = 12:35:45

Quantity of glucose taken from A = 1 liter out of 2

Quantity of glucose taken from B = 3/5 x 3 = 1.5 lit

Quantity of glucose taken from C = 0.8 lit

So, total quantity of glucose taken from A,B and C = 3.6 lit

So, quantity of alcohol = (2 + 3 + 1) - 3.6 = 2.4 lit

Ratio of glucose to alcohol = 3.6/2.4 = 3:2

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Filed Under: Alligation or Mixture
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23 7709
Q:

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.


Countermand

 

A) Dam B) Term
C)  Rout D) Main
 
Answer & Explanation Answer: D) Main

Explanation:
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Filed Under: Logical Sequence of Words
Exam Prep: Bank Exams

9 7707
Q:

Consider the given statement as true and decide which of the given conclusions can definitely be drawn from the given statements.


Statement:


No dog is a cat.

Some cats are rats.

All rats are pigs.


Conclusions:


1. All dogs are rats


2. All pigs are rats


3. Some pigs are cats


4. No pig is a dog

 

A) Only Conclusion 4 follows B) Only Conclusion 3 follows
C) Only Conclusion 1 and 3 follows D) Only Conclusion 1 and 2 follows
 
Answer & Explanation Answer: B) Only Conclusion 3 follows

Explanation:
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Filed Under: Statement and Conclusions
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5 7707
Q:

Choose the number which is different from others in the group?

A) 183 B) 137
C) 121 D) 231
 
Answer & Explanation Answer: C) 121

Explanation:

121 is the only perfect square number in the group.

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Filed Under: Classification

37 7704
Q:

Two dice are tossed. The probability that the total score is a prime number is :

A) 1/6 B) 1/2
C) 5/12 D) 3/4
 
Answer & Explanation Answer: C) 5/12

Explanation:

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Filed Under: Probability

4 7698
Q:

A group of 1200 persons consisting of boys and girls is travelling in a Bus. For every 15 boys there is one girl. The number of girls in the group is ?

A) 60 B) 65
C) 70 D) 75
 
Answer & Explanation Answer: D) 75

Explanation:

If there are x girls, then
x + 15x = 1200
16x = 1200
x= 1200/16 = 75

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Filed Under: Arithmetical Reasoning
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4 7695