Directions : the letter of English alphabet from A to M were written, leaving space for one letter between every two letters and then the remaining letters were inserted beginning with N and ending the series with Z after M.
Which letter would be exactly in the middle of eighteenth letter from the beginning and fifteenth from the end?
Explanation
Step 1: Construction of the Series
-
Write A to M with a blank space between each:
A,_,B,_,C,_,D,_,E,_,F,_,G,_,H,_,I,_,J,_,K,_,L,_,M
-
Fill the spaces with N to Y and place Z after M.
The Resulting Series:
| Pos |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
| Let |
A |
N |
B |
O |
C |
P |
D |
Q |
E |
R |
F |
S |
G |
T |
H |
U |
I |
V |
J |
W |
K |
X |
L |
Y |
M |
Z |
Step 2: Identify the specified positions
-
18th letter from the beginning (left): Looking at the table, the 18th letter is V.
-
15th letter from the end (right): To find the position from the left: (26−15)+1=12th position.
Looking at the table, the 12th letter is S.
Step 3: Find the middle letter
We need to find the letter exactly between the 12th letter (S) and the 18th letter (V).
The letters between them are:
12(S),13(G),14(T),15(H),16(U),17(I),18(V)
To find the middle position:
Middle Position=212+18=230=15
The 15th letter in our series is H.
Conclusion:
The letter exactly in the middle of the eighteenth from the beginning and fifteenth from the end is H.
Correct Option: (b) H
Explanation
Step 1: Construction of the Series
-
Write A to M with a blank space between each:
A,_,B,_,C,_,D,_,E,_,F,_,G,_,H,_,I,_,J,_,K,_,L,_,M
-
Fill the spaces with N to Y and place Z after M.
The Resulting Series:
| Pos |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
| Let |
A |
N |
B |
O |
C |
P |
D |
Q |
E |
R |
F |
S |
G |
T |
H |
U |
I |
V |
J |
W |
K |
X |
L |
Y |
M |
Z |
Step 2: Identify the specified positions
-
18th letter from the beginning (left): Looking at the table, the 18th letter is V.
-
15th letter from the end (right): To find the position from the left: (26−15)+1=12th position.
Looking at the table, the 12th letter is S.
Step 3: Find the middle letter
We need to find the letter exactly between the 12th letter (S) and the 18th letter (V).
The letters between them are:
12(S),13(G),14(T),15(H),16(U),17(I),18(V)
To find the middle position:
Middle Position=212+18=230=15
The 15th letter in our series is H.
Conclusion:
The letter exactly in the middle of the eighteenth from the beginning and fifteenth from the end is H.
Correct Option: (b) H