Mental Ability Tests on 'Alphabet and Number Sequences and Series' Set 159 | free questions for competitive exams for banks, PO exams, NDA, CAT, CDS, ITBP, Civil, Defence Services and National Talent Search Exams, UGC NET, GATE, CSAT

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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.

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Question 1

Carefully scan the following series of digits from 1-9, and determine how many 5 are there that are completely divisible by the number on their left but not divisible by the number that is second to their left?

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

Soln.
Ans: C

At these locations: 8-5-5 ;4-5-5 ;

Question ID: 16-02-10-11-59-51-791.
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Question 2

Study the following series.

X Z P C 5 2 M F Y + A 1 G Q V 3 R 6 7 T

Find what should come in place of the question mark(?)

ZC , ? , F+ , AG

M+

Soln.
Ans: B

There is a gap of 2 between the first characters of each of the given pair. The second character of each pair is separated by one position to the right of the first character.

Question ID: 16-02-10-11-59-51-792.
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Question 3

In the following series how many 5 are there that are completely divisible by the number on their left but not by the number on their right?

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

Soln.
Ans: C

At these locations: 5-5-8 ;5-5-3 ;

Question ID: 16-02-10-11-59-51-793.
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Question 4

The following sequence is first reversed, then every letter beginning from position 12, counted from the left of the new sequence, is replaced by its successor in the English alphabet, and any Z after this position is replaced by A, then, how many T will be there in the resulting sequence?

A L Q C P J D N U Y Q I E F K N J X W D B O W R E

Soln.
Ans: B

The series becomes:

E R W O B D W X J N K G F J R Z V O E K Q D R M B

Question ID: 16-02-10-11-59-51-794.
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Question 5

If the second half of the following series is reversed, then which item is 3th to the right of the 10th item from the right side? The series is:

6 % P C 4 I 9 B + F H 3 V O @ D 7 W T S

Soln.
Ans: A

Midpoint is 10. We have to find 20 - 10 + 3 = 13 + 1th item from the left side. Since the location lies in the right half, the sequence has been reversed in this zone. So the item will be at location 10 + (20 - 13) = 17 from the left in the original series. Which means the item is: 7.

Question ID: 16-02-10-11-59-51-795.
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