# Mental Ability Tests on 'Alphabet and Number Sequences and Series' Set 115

## These questions help you develop speed and accuracy. Every exam tests these skills. So if you are preparing for a bank exam, state and national talent search exams, UGC NET, GATE, etc., then this quiz will help you master these skills. I have provided answers and solutions to each of the questions. This is quiz no. 115 in this series.

Last Reviewed and Updated on February 7, 2020
Posted by Parveen(Hoven),
Aptitude Trainer and Software Developer

## Quiz Questions

Each question has four choices. More than one option can be correct. After you have finished the quiz scroll towards the last question to view your result. I have provided solutions and answers to all the questions.

### Question 1

John is ranked 19th from the top and Rajni is ranked 9th from the bottom in a class of 27 students. How many students are there between John and Rajni?

A

14

B

9

C

7

D

13

Soln.
Ans: C

Sum of positions of an item from top(right) and bottom(left) of a list is always equal to the sum of the positions of the first and last items. So position of John from the bottom is = 27 - 19 + 1 = 9. Number of students between them is: difference of 9 and 17 (minus 1) = 7

Question ID: 16-02-10-11-59-51-571.
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### Question 2

If every letter beginning from O is replaced by consecutive odd number beginning with 3, which number or letter will be 6th to the right of the 13th number or letter counting from the right end?

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A

D

B

13

C

C

D

H

Soln.
Ans: B

The series becomes:

A B C D E F G H I J K L M N 3 5 7 9 11 13 15 17 19 21 23 25

Question ID: 16-02-10-11-59-51-572.
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### Question 3

This is a series of digits that has been written by randomly arranging 19 digits. How many 5 are there that are completely divisible by the second number to their right?

6 5 3 8 4 2 6 1 4 7 5 3 2 5 5 9 5 5 9

A

1

B

3

C

4

D

2

Soln.
Ans: A

At these locations: 5-9-5 ;

Question ID: 16-02-10-11-59-51-573.
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### Question 4

If every letter beginning from position 6, counted from left, is replaced by its successor in the English alphabet, and any Z after this position is replaced by A, then, how many W will be there in the resulting sequence?

O A C Q C O E P F I V R J G G D Y J T W A X D V H

A

2

B

4

C

1

D

5

Soln.
Ans: A

The series becomes:

O A C Q C P F Q G J W S K H H E Z K U X B Y E W I

Question ID: 16-02-10-11-59-51-574.
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### Question 5

Carefully scan the following series of digits from 1-9, and determine how many 7 are there that are completely divisible by the number on their left but not divisible by the number that is second to their left?

7 7 3 6 7 8 5 1 3 7 4 1 8 2 5 2 7 6 9

A

0

B

3

C

2

D

1

Soln.
Ans: A

None.

Question ID: 16-02-10-11-59-51-575.
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