This topic is based on series of numbers, letters
or combination of letters, numbers and symbols.
Types of series
1.
Letter
Series
2.
Number
Series
3.
Miscellaneous
Series
This series is based on letter
positions-
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A
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B
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C
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D
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E
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F
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G
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H
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I
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J
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K
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L
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M
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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N
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O
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P
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Q
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R
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S
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T
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U
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V
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W
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X
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Y
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Z
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14
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15
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16
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17
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18
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19
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20
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21
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22
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23
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24
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25
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26
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EXAMPLE :
Ex.1-2. 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
Ex.1. How many such vowels are there in the above
arrangement each of which is immediately preceded as well as followed by a
consonant?
(1) One
(2) Two
(3) Three
(4) Four
(5) None of these
Sol.(4) Consonant- Vowel - Consonant
1. D E F
2. H I J
3. N O P
4. T U V
Ex.2. What should come in the place of question
mark (?)
A, C, F, J, ?
(1) Q
(2) O
(3) T
(4) U
(5) None of these
Sol. (2)
A C F J (O)
1 3 6 10 15
Number Series
This series is based on Number Series.
EXAMPLE :
Ex:3 1 2 6 5 3 2 1 8 9 6 5 3 2 1 2 3 1
How many 1’s are there in the above arrangement
each of which is followed by 2?
(1) One
(2) Two
(3) Three
(4) Four
(5) None of these
Sol.(2) 1 2 6 5 3 2 1 8 9 6 5 3 2 1 2 3 1
Miscellaneous Series
This Series is based on the position of letters,
numbers and symbols.
Ex.5-7. F @ 5 3 R $ J P E 1 H % I 8 4 B 8 A
W 2 U G 6 * 9 Z N M © V
Ex.5. Which of the following element is 13th from
the left end ?
(1) %
(2) I
(3) Q
(4) 1
(5) None of these
Sol.(2)
F @ 5 3 R $ J P E
1 H % I 8 4 B 8 A W 2 U G 6 *
9 Z N M © v
1 2 3 4 5 6 7 8
9 10 11 12 13
Points to Remember :-
You can easily solve the problems based on this
topic with the help of these short tricks -
1. Starting points of the series is left end and
ending point of the series is right end.
2. To solve the question easily you should break
the series in combination of fivefive elements.
We can easily understand the series problems by -
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A
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B
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C
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D
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E
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F
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G
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H
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I
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J
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K
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L
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M
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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11
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12
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13
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N
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O
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P
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Q
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R
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S
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T
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U
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V
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W
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X
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Y
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Z
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14
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15
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16
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17
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18
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19
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20
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21
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22
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23
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24
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25
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26
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3. left element – left element = left element 13th
element from left – 8th element from left = 5th element from left is E.
4. right element – right element = right element
13th element from right – 8th element from right = 5th element from right is V.
5. left element + right element = left element 13th
element from left + 8th element from right = 21th element from left is U.
6. right element + left element = right element
13th element from right + 8th element
from left = 21th element from right is F.
7. all these situations are based on condition of
left end or right end.
8. Once the candidate knows the position of
letters, he requires to learn time management. We don’t have much time and
hence all the letters can’t be read thoroughly.
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E
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J
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O
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T
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Y
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5
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10
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15
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20
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25
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Words given above are just the arrangement of the
alphabets having position multiples of 5 from this word we can learn position
of 26 letters. Abovementioned five letters have, 4 their followers, and 4 their
precedent.
9. Here a new word is given below in which the
arrangement of letters have occupied positions in the multiples of 3, with the
help of this word we can get the position of total 26 letters.
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C
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F
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I
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L
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O
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R
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U
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X
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3
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6
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9
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12
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15
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18
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21
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24
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EXERCISE
Q.1-3. The questions are based on the following set
of numbers.
426, 768, 693, 286, 741
Q.1. If all the numbers are arranged in descending
order what will be the difference between the second digit of third number
and first digit of second number?
(1) 2
(2) 1
(3) 3
(4) 4
(5) None of these
Q.2. If in each number the first and the second
digits are interchanged, which number will be the second highest number.
(1) 693
(2) 286
(3) 742
(4) 768
(5) 426
Q.3. If in each number all the digits are arranged
in ascending order, which number will be second lowest?
(1) 426
(2) 768
(3) 693
(4) 268
(5) 741
Q.4-5. On the basis of alphabet given below, answer
the following questions-
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
Q.4. In the following letter series ,which will
replace the question mark(?) ?
AIU, ELR, HOP, JRM, KUK, (?)
(1) KWH
(2) LXH
(3) KXG
(4) KVG
(5) None of these
Q.5. In the above alphabet series,18 letters from
right were put in the reverse order ,then which letter will be the third at
left of 22nd letter from left?
(1) X
(2) J
(3) P
(4) O
(5) None of these
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