Aptitude and Reasoning Questions

Q:

If J is the interest on K and K is the interest on L, the rate and time is the same on both the cases. What is the relation between J, K and L  ?

A) J x J = KL B) K x K= JL
C) L x L = JK D) JKL = 1
 
Answer & Explanation Answer: B) K x K= JL

Explanation:

Let the Time be 'N' and Rate be 'R' 

J = (K x NR)/100 K = (L x NR)/100 

J/K = NR/100 K/L = NR/100 

J/K = K/L 

K x K = JL

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Filed Under: Simple Interest
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Q:

A group of five persons is formed from five boys and four girls. Find the probability that there are at least two girls in the group?

A) 110/129 B) 5/6
C) 121/126 D) 3/7
 
Answer & Explanation Answer: A) 110/129

Explanation:

Total number of possible ways = 

9C5 = 9 x 8 x 7 x 6 x 55 x 4 x 3 x 2 x 1 = 126

Number of favorable cases = 

4C2 x 5C3 + 4C3 x 5C2 + 4C4 x 5C14 x 32 x 1 x 5 x 4 x 33 x 2 x 1 + 4 x 3 x 23 x 2 x 1 x 5 x 4 2 x 1 + 1 x 5= 6 x 10 + 4 x 10 + 5= 60 + 40 + 5= 105

 

Therefore, required probability = 105/126 = 5/6

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Filed Under: Probability
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10 4860
Q:

Gold demand has fallen in the first half due to rising prices and the trend is likely to continue in the second half.

Conclusions :

I. Customers are very price-sensitive

II. There will be no improvement in demand in the second half

A) If only conclusion I follows B) If only conclusion II follows
C) If neither I nor II follows D) If both I and II follow
 
Answer & Explanation Answer: A) If only conclusion I follows

Explanation:

Fall of demand of gold is due to rising prices. Hence, I can be concluded. II cannot be concluded from the given statement.

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Q:

Consider the argument and decide which of the given assumptions is/are implicit.

 

Argument :

 

Akbar said to his queen, "Birbal is the wisest man in my kingdom."

 

Assumptions :

 

1. Akbar is not as wise as Birbal.

2. Akbar wants Birbal to become the next King.

 

A) Only assumption 2 is implicit B) Neither 1 nor 2 is implicit
C) Both 1 and 2 are implicit D) Only assumption 1 is implicit
 
Answer & Explanation Answer: D) Only assumption 1 is implicit

Explanation:
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Filed Under: Statement and Assumptions
Exam Prep: Bank Exams

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Q:

K can lay Highway road between two cities in 16 days. L can do the same job in 12 days. With the help of M, they completes the job in 4 days. How much days does it take for M alone to complete the work ?

A) 47/7 days B) 59/6 days
C) 48/5 days D) 57/5 days
 
Answer & Explanation Answer: C) 48/5 days

Explanation:

Amount of work K can do in 1 day = 1/16

Amount of work L can do in 1 day = 1/12

Amount of work K, L and M can together do in 1 day = 1/4

Amount of work M can do in 1 day = 1/4 - (1/16 + 1/12) = 3/16 – 1/12 = 5/48

=> Hence M can do the job on 48/5 days = 9 (3/5) days  

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Filed Under: Time and Work
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9 4852
Q:

The compound interest on Rs. 8000 for 3 year at 10% p.a. is

A) 2648 B) 2145
C) 2587 D) 2784
 
Answer & Explanation Answer: A) 2648

Explanation:

8000 × 33.1% = 2648

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Filed Under: Compound Interest
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18 4851
Q:

You are returning home from school. On the way, you find a sealed envelope in a street, fully addressed with unused stamps on it You would :

A) leave it there as it was and walk away B) remove the stamps and destroy the envelope.
C) open the envelope, find out who has dropped it by mistake, and send it to him if possible. D) post it at the nearest letter box.
 
Answer & Explanation Answer: D) post it at the nearest letter box.

Explanation:

 

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63 4851
Q:

There are six persons A, B, C, D, E and F. C is the sister of F. B is the brother of E's husband. D is the father of A and grandfather of F. There are two fathers, three brothers and a mother in the group. Which of the following is a group of brothers ? 

A) ABF B) ABD
C) BFC D) HEW
 
Answer & Explanation Answer: A) ABF

Explanation:

D is father of A and grandfather of F. So, A is father of F. 

Thus, D and A are the two fathers. C is the sister of F So, C is the daughter of A. 

Since there is only one mother, it is evident that E is the wife of A and hence the mother of C and F. 

So, B is brother of A There are three brothers. So, F is the brother of C. 

Clearly, B and A are brothers. F is the brother of C So, three brothers are A, B, F. 

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Filed Under: Blood Relations

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