Mental Ability Tests on 'Alphabet and Number Sequences and Series' Set 83 | 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

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.

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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?

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

Soln.
Ans: D

None.

Question ID: 16-02-10-11-59-51-411.
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Question 2

In the number series written below, how many 6 are there that are completely divisible by both the two successors to their right?

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

Soln.
Ans: A

At these locations: 6-6-3 ;6-1-2 ;

Question ID: 16-02-10-11-59-51-412.
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Question 3

Which letter will be the 8th to the right of 5th letter from left of the letter which is exactly in the middle of the following series?

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

Soln.
Ans: C

The letter will be at net position 8 - 5 to the mid of the series. This position is = (length/2) + 3 = 16 from the start of the series. The length of the series is 25, so its mid is at item 13.

Question ID: 16-02-10-11-59-51-413.
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Question 4

If an item is at position 17 from the top of a list and at position 15 from the bottom of that list, how many items are there in the list?

Soln.
Ans: B

Sum of positions of an item from top and bottom of a list is always equal to the sum of the positions of the first and last items. So total number of items is= position of last item is= 17 + 15 - 1 = 31.

Question ID: 16-02-10-11-59-51-414.
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Question 5

The following sequence is first reversed, then every letter beginning from position 4, 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 L will be there in the resulting sequence?

E W G M D A T J L H C S R V O G P V K O X H A T Z