Aptitude and Reasoning Questions

Q:

Ankita borrows Rs. 7000 at simple Interest from a lender. Atthe end of 3 years, she again borrows Rs. 3000 and settledthat amount after paying Rs. 4615 as interest after 8 years from the time she made the first borrowing. What is the rate of interest?

A) 5.5% B) 9.5%
C) 7.5% D) 6.5%
 
Answer & Explanation Answer: D) 6.5%

Explanation:

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Filed Under: Simple Interest

2 2696
Q:

If 5x - 17 = -x + 7, then x = ?

A) 4 B) 5
C) 7 D) 9
 
Answer & Explanation Answer: A) 4

Explanation:

Given equation  5x-17 = -x+7

Add 1x to each side of the equation

5x-17+x = -x+7+x

6x=24

x=4

 

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Filed Under: Logarithms
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
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17 2695
Q:

Absolute value of 9?

A) 0 B) 9
C) 8 D) -9
 
Answer & Explanation Answer: B) 9

Explanation:

Absolute value of a number :

It means that the distance of a number from 0 on a number line. 

 

Here absolute value of 9 is that on a number line 9 is 9 units away from 0. Hence its absolute value is 9. Similarly, absolute value of -9 means -9 is also 9 units away from the 0 on number line. Hence, absolute value of -9 is also 9.

 

Hence, the absolute value of 9 is 9.

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Filed Under: Arithmetical Reasoning
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Q:

If a + b + c = 7/12, 3a – 4b + 5c = 3/4 and 7a – 11b – 13c = – 7/12, then what is the value of a + c?

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

Explanation:
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Filed Under: Simplification
Exam Prep: Bank Exams

2 2693
Q:

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
DK, FN, HQ, ?

A) KS B) JT
C) KT D) JS
 
Answer & Explanation Answer: B) JT

Explanation:
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Filed Under: Alphabet Test
Exam Prep: Bank Exams

0 2692
Q:

What is the sum of all 3 digits number that can be formed using digits 0,1,2,3,4,5 with no repitition ?

A) 28450 B) 26340
C) 32640 D) 36450
 
Answer & Explanation Answer: C) 32640

Explanation:

We know that zero can't be in hundreds place. But let's assume that our number could start with zero.

 

The formula to find sum of all numbers in a permutation is

 

111 x no of ways numbers can be formed for a number at given position x sum of all given digits

 

No of 1 s depends on number of digits

 

So,the answer us

 

111 x 20 x (0+1+2+3+4+5) = 33300

 

We got 20 as follows. If we have 0 in units place we can form a number in 4*5 ways. This is for all numbers. So we have substituted 20 in formula.

 

Now, this is not the final answer because we have included 0 in hundreds place. so we have to remove the sum of all numbers that starts with 0.

 

This is nothing but the sum of all 2 digits numbers formed by 1 2 3 4 5. Because 0 at first place makes it a 2 digit number.

 

So the sum for this is 11 x 4 x (1+2+3+4+5).
=660

 

Hope u understood why we use 4. Each number can be formed in 4x1 ways

 

So, the final answer is 33300-660 = 32640

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Filed Under: Permutations and Combinations
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2 2692
Q:

The average age of Ram and Rahim is 18 years. The average age of Rahim and Ramesh is 25 years. The average age of Ram and Ramesh is 29 years. What is the age (in years) of the eldest of the three?

A) 14 B) 22
C) 28 D) 36
 
Answer & Explanation Answer: D) 36

Explanation:
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Filed Under: Problems on Ages
Exam Prep: Bank Exams

2 2691
Q:

Sanmitra walked 8 m towards the north. He turned to his right and walked 16m , then he turned to his left and walked 5 m and again he turned to his left and walked 16 m. In which direction is he from his starting point ?

A) South B) East
C) North D) West
 
Answer & Explanation Answer: C) North

Explanation:
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Filed Under: Direction Sense Test
Exam Prep: Bank Exams

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