Note: If we are moving to the left hand side of any letter that means positions are decreasing and if we are moving towards right hand side of the series that means Positions of the letters are increasing.
If the first half and second half of the alphabet series are Arranged in reverse order, then find out the answers to the given questions:
Q.1. Which letter is 5^{th} to the right of the 12^{th} letter from the lefthand side of the series?
Ans. 5^{th} to the right of 12^{th} letter from left means 12+5 = 17^{th} letter of the series.
Because series is in reverse order for that the trick is to:
Hence, the letter 17^{th} falls in the 2^{nd} half which starts from position 14^{th} and ends on 26^{th}.
∴ 14 + 26 = 40, 40  17 = 23
which means the letter which is in 17^{th} position in the given series is 23^{rd} in the real series. Hence, the letter is “W”.
Q.2. Which letter is 5^{th} to the left of the 12^{th} letter from the lefthand side on the series?
Ans. 5^{th} to the left of 12^{th} letter from left means, 12 – 5 = 7^{th} letter of the serries
Which falls in the first half of the series which starts from position 1^{st} and ends on 13th.
∴ 1 + 13 = 14, 14 – 7 = 7^{th} letter i.e.“g” in the real series.
(Position is same even in reversed series, because letter 7 is in the middle of the series, and its position will not be Changed even after letter get reversed)
Q.3. Which letter is the 5^{th} to the left of the 12^{th} letter from the righthand side of the series?
Ans. 5^{th} to the left of the 12^{th} letter from the right.
In this case first of all we will convert the 12^{th} letter from right to its position from left. (27 – 12 = 15)
⇒ We have to find the 5^{th} letter to the left of the 15^{th} letter from the left.
Hence, 15 – 5 = 10^{th} letter, that falls in first half of the series.
∴ 1 + 13 = 14, 14 – 10 = 4^{th} letter i.e. “d”.
Q.4. Which letter is 5^{th} to the right of the 12^{th} letter from the righthand side of the series?
Ans. 5^{th} to the right of the 12^{th} letter from the right end.
► 12^{th} from the right end means 2712 = 15^{th} from left.
⇒ 15 + 5 = 20^{th} letter, which falls in the second half of the series.
∴ 14 + 26 = 40, 40 – 20 = 20^{th} letter i.e. “t”.
(because position 20 is in the middle of the second half of the series).
Find The Letter In Place Of Question Mark (?) In The Series Given Below:
Q.1. B, F, ?, N, R
(a) G
(b) K
(c) J
(d) L
(e) None of The Above
Ans. (c)
Q.2. P, ?, J, G, D, A
(a) Q
(b) N
(c) K
(d) M
(e) None of The Above
Ans. (d)
Q.3. ?, E, G, J, N
(a) A
(b) B
(c) D
(d) Z
(e) None of The Above
Ans. (c)
Q.4. X, F, Y, G, ?, H
(a) Z
(b) A
(c) B
(d) Y
(e) None of The Above
Ans. (a)
Q.5. B, B, A, D, ?, F
(a) B
(b) A
(c) Z
(d) C
(e) None of The Above
Ans. (c)
Example 1. a _ c a a _ b c c _ a a b bb _ c c
(a) bbca
(b) abac
(c) bbac
(d) bacb
Ans. (b)
Explanation. We can solve questions of these types by following steps:
Example 2. a _ b b a a _ b a a _ b a a b _ a a b
(a) abab
(b) baba
(c) abbb
(d) babb
Ans. (c)
Explanation.
We can solve this by following steps:
Example 3. a _ b c a a _ _ aa b _ a a _ c a a _ c
(a) accbbb
(b) acbcbb
(c) cbcbba
(d) abccbb
Ans. (d)
Explanation.
We can solve this by following steps:
In the exam one can also ask questions to make a meaningful word, or by arranging letters in ascending or descending order, or by getting the same gap in between two letters as in the alphabet series.
This can be clearly explained by the following examples:
Example 1. If the letters of the word “ BEAUTIFUL” are arranged in Ascending/increasing order. How many letters are there whose position will not change?
(a) 4
(b) 3
(c) 1
(d) 2
Ans. (c)
Explanation.
In ascending order:
As we can see only letter “U” is on the same position after rearrangement. Therefore, answer is option – (c).
Example 2. How many pairs are there in the word “BEAUTIFUL”, which have the same number of letters between them as in the alphabet series?
(a) 1
(b) 4
(c) 3
(d) none
Ans. (b)
Explanation.
Therefore, ans is option  (b)
Example 3. With the help of letters “ E , S, R , O” each letter used
Ones, how many meaningful words can be formed?
(a) 1
(b) 2
(c) 3
(d) none
Ans. (a)
Explanation. With the help of these letters only one word is formed: ROSE.
Hence, the answer is option – (a)
Note:
These types of questions are just to check your General intelligence.
Example 4. With the help of the letters “A, D, E, R” each letter used
Ones, how many meaningful words can be formed?
(a) 2
(b) 3
(c) more than 3
(d) none
Ans. (c)
Explanation. With the help of these letters words formed are: READ, DEAR, DARE, RADE
Hence, the answer is option (c).
197 videos151 docs200 tests

1. What are the different types of questions in a letter series? 
2. What is Type 1 question in a letter series? 
3. Explain Type 2 question in a letter series. 
4. How can Type 3 question in a letter series be solved? 
5. What is the concept behind Type 4 question in a letter series? 
197 videos151 docs200 tests


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